68955865 has 16 divisors (see below), whose sum is σ = 91290240. Its totient is φ = 49582720.

The previous prime is 68955841. The next prime is 68955869. The reversal of 68955865 is 56855986.

It is a happy number.

It is not a de Polignac number, because 68955865 - 2⁵ = 68955833 is a prime.

It is a super-2 number, since 2×68955865² = 9509822635796450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68955869) 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 15 ways as a sum of consecutive naturals, for example, 2149 + ... + 11938.

It is an arithmetic number, because the mean of its divisors is an integer number (5705640).

Almost surely, 2^68955865 is an apocalyptic number.

It is an amenable number.

68955865 is a deficient number, since it is larger than the sum of its proper divisors (22334375).

68955865 is a wasteful number, since it uses less digits than its factorization.

68955865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14192.

The product of its digits is 2592000, while the sum is 52.

The square root of 68955865 is about 8303.9668231515. The cubic root of 68955865 is about 410.0691237807.

The spelling of 68955865 in words is "sixty-eight million, nine hundred fifty-five thousand, eight hundred sixty-five".