68044624 has 20 divisors (see below), whose sum is σ = 138775840. Its totient is φ = 32231520.

The previous prime is 68044607. The next prime is 68044631. The reversal of 68044624 is 42644086.

It is a happy number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 68044624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111612 + ... + 112219.

It is an arithmetic number, because the mean of its divisors is an integer number (6938792).

Almost surely, 2^68044624 is an apocalyptic number.

It is an amenable number.

68044624 is an abundant number, since it is smaller than the sum of its proper divisors (70731216).

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

68044624 is a wasteful number, since it uses less digits than its factorization.

68044624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223858 (or 223852 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 68044624 is about 8248.9165349154. The cubic root of 68044624 is about 408.2547748729.

The spelling of 68044624 in words is "sixty-eight million, forty-four thousand, six hundred twenty-four".