68718444 has 24 divisors (see below), whose sum is σ = 165516288. Its totient is φ = 22167120.

The previous prime is 68718431. The next prime is 68718467. The reversal of 68718444 is 44481786.

It is a happy number.

It is a super-2 number, since 2×68718444² = 9444449091562272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68718396 and 68718405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91992 + ... + 92735.

It is an arithmetic number, because the mean of its divisors is an integer number (6896512).

Almost surely, 2^68718444 is an apocalyptic number.

It is an amenable number.

68718444 is an abundant number, since it is smaller than the sum of its proper divisors (96797844).

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

68718444 is a wasteful number, since it uses less digits than its factorization.

68718444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184765 (or 184763 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 68718444 is about 8289.6588590846. The cubic root of 68718444 is about 409.5979481276.

The spelling of 68718444 in words is "sixty-eight million, seven hundred eighteen thousand, four hundred forty-four".