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68805996 = 22372117017
BaseRepresentation
bin1000001100111…
…10010101101100
311210110201002020
410012132111230
5120103242441
610454430140
71463561400
oct406362554
9153421066
1068805996
1135925a66
121b062350
131134120c
1491d1100
156091e66
hex419e56c

68805996 has 36 divisors (see below), whose sum is σ = 186760728. Its totient is φ = 19658688.

The previous prime is 68805991. The next prime is 68806033. The reversal of 68805996 is 69950886.

It is not an unprimeable number, because it can be changed into a prime (68805991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57921 + ... + 59096.

It is an arithmetic number, because the mean of its divisors is an integer number (5187798).

Almost surely, 268805996 is an apocalyptic number.

It is an amenable number.

68805996 is an abundant number, since it is smaller than the sum of its proper divisors (117954732).

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

68805996 is a wasteful number, since it uses less digits than its factorization.

68805996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117038 (or 117029 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 68805996 is about 8294.9379744516. The cubic root of 68805996 is about 409.7718262424.

The spelling of 68805996 in words is "sixty-eight million, eight hundred five thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 117017 234034 351051 468068 702102 819119 1404204 1638238 2457357 3276476 4914714 5733833 9829428 11467666 17201499 22935332 34402998 68805996