Search a number
-
+
6868621163 = 171936757943
BaseRepresentation
bin1100110010110011…
…01101011101101011
3122201200112002220102
412121121231131223
5103031331334123
63053322220015
7332132213405
oct63131553553
918650462812
106868621163
112a05180818
1213b835460b
138560269a1
1449231bb75
152a3017028
hex19966d76b

6868621163 has 16 divisors (see below), whose sum is σ = 7676421120. Its totient is φ = 6107550336.

The previous prime is 6868621159. The next prime is 6868621181. The reversal of 6868621163 is 3611268686.

It is a cyclic number.

It is not a de Polignac number, because 6868621163 - 22 = 6868621159 is a prime.

It is a super-2 number, since 2×68686211632 = 94355913361622945138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6868621363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89570 + ... + 147512.

It is an arithmetic number, because the mean of its divisors is an integer number (479776320).

Almost surely, 26868621163 is an apocalyptic number.

6868621163 is a deficient number, since it is larger than the sum of its proper divisors (807799957).

6868621163 is a wasteful number, since it uses less digits than its factorization.

6868621163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58346.

The product of its digits is 497664, while the sum is 47.

The square root of 6868621163 is about 82877.1449978823. The cubic root of 6868621163 is about 1900.8879656461.

The spelling of 6868621163 in words is "six billion, eight hundred sixty-eight million, six hundred twenty-one thousand, one hundred sixty-three".

Divisors: 1 17 19 323 367 6239 6973 57943 118541 985031 1100917 18715589 21265081 361506377 404036539 6868621163