Search a number
-
+
856708007645 = 571717961713037
BaseRepresentation
bin11000111011101111100…
…01101100011011011101
310000220022110021000012002
430131313301230123131
5103014014222221040
61453322145452045
7115616010625250
oct14356761543335
93026273230162
10856708007645
11300367377216
1211a051941025
1362a30699299
142d671925097
1517441a24a15
hexc777c6c6dd

856708007645 has 64 divisors (see below), whose sum is σ = 1253099911680. Its totient is φ = 548878589952.

The previous prime is 856708007633. The next prime is 856708007711. The reversal of 856708007645 is 546700807658.

It is not a de Polignac number, because 856708007645 - 26 = 856708007581 is a prime.

It is a super-2 number, since 2×8567080076452 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65707067 + ... + 65720103.

It is an arithmetic number, because the mean of its divisors is an integer number (19579686120).

Almost surely, 2856708007645 is an apocalyptic number.

856708007645 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

856708007645 is a deficient number, since it is larger than the sum of its proper divisors (396391904035).

856708007645 is a wasteful number, since it uses less digits than its factorization.

856708007645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13862.

The product of its (nonzero) digits is 11289600, while the sum is 56.

The spelling of 856708007645 in words is "eight hundred fifty-six billion, seven hundred eight million, seven thousand, six hundred forty-five".

Divisors: 1 5 7 17 35 85 119 179 595 617 895 1253 3043 3085 4319 6265 10489 13037 15215 21301 21595 52445 65185 73423 91259 106505 110443 221629 367115 456295 552215 773101 1108145 1551403 1877531 2333623 3865505 7757015 8043829 9387655 11668115 13142717 16335361 39671591 40219145 56306803 65713585 81676805 136745093 198357955 277701137 281534015 683725465 957215651 1388505685 1439845391 4786078255 7199226955 10078917737 24477371647 50394588685 122386858235 171341601529 856708007645