68884257 has 16 divisors (see below), whose sum is σ = 99122240. Its totient is φ = 42299712.

The previous prime is 68884219. The next prime is 68884261. The reversal of 68884257 is 75248886.

It is not a de Polignac number, because 68884257 - 2⁸ = 68884001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68884217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19719 + ... + 22947.

It is an arithmetic number, because the mean of its divisors is an integer number (6195140).

Almost surely, 2^68884257 is an apocalyptic number.

It is an amenable number.

68884257 is a deficient number, since it is larger than the sum of its proper divisors (30237983).

68884257 is a wasteful number, since it uses less digits than its factorization.

68884257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3792.

The product of its digits is 860160, while the sum is 48.

The square root of 68884257 is about 8299.6540289340. The cubic root of 68884257 is about 409.9271276395.

The spelling of 68884257 in words is "sixty-eight million, eight hundred eighty-four thousand, two hundred fifty-seven".