Search a number
-
+
68670677216 = 2531293236261
BaseRepresentation
bin111111111101000101…
…110110000011100000
320120020202222211211102
4333331011312003200
52111114143132331
651314042533532
74650503061011
oct777505660340
9216222884742
1068670677216
11271398971a9
12113858072a8
136624c13a1b
143476261008
151bbda7c4cb
hexffd1760e0

68670677216 has 48 divisors (see below), whose sum is σ = 140033432448. Its totient is φ = 33114201600.

The previous prime is 68670677177. The next prime is 68670677219. The reversal of 68670677216 is 61277607686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68670677219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172526 + ... + 408786.

It is an arithmetic number, because the mean of its divisors is an integer number (2917363176).

Almost surely, 268670677216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68670677216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70016716224).

68670677216 is an abundant number, since it is smaller than the sum of its proper divisors (71362755232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68670677216 is a wasteful number, since it uses less digits than its factorization.

68670677216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236595 (or 236587 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 68670677216 in words is "sixty-eight billion, six hundred seventy million, six hundred seventy-seven thousand, two hundred sixteen".

Divisors: 1 2 4 8 16 31 32 62 124 248 293 496 586 992 1172 2344 4688 9083 9376 18166 36332 72664 145328 236261 290656 472522 945044 1890088 3780176 7324091 7560352 14648182 29296364 58592728 69224473 117185456 138448946 234370912 276897892 553795784 1107591568 2145958663 2215183136 4291917326 8583834652 17167669304 34335338608 68670677216