68903855 has 16 divisors (see below), whose sum is σ = 88300800. Its totient is φ = 51502080.

The previous prime is 68903851. The next prime is 68903893. The reversal of 68903855 is 55830986.

It is not a de Polignac number, because 68903855 - 2² = 68903851 is a prime.

It is a super-2 number, since 2×68903855² = 9495482467722050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68903851) 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, 3170 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (5518800).

Almost surely, 2^68903855 is an apocalyptic number.

68903855 is a deficient number, since it is larger than the sum of its proper divisors (19396945).

68903855 is a wasteful number, since it uses less digits than its factorization.

68903855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15394.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 68903855 is about 8300.8345965933. The cubic root of 68903855 is about 409.9659995600.

The spelling of 68903855 in words is "sixty-eight million, nine hundred three thousand, eight hundred fifty-five".