68644544 has 28 divisors (see below), whose sum is σ = 136483344. Its totient is φ = 34255104.

The previous prime is 68644523. The next prime is 68644559. The reversal of 68644544 is 44544686.

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, 55517 + ... + 56739.

Almost surely, 2^68644544 is an apocalyptic number.

68644544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68644544 is a deficient number, since it is larger than the sum of its proper divisors (67838800).

68644544 is a wasteful number, since it uses less digits than its factorization.

68644544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2102 counting only the distinct ones).

The product of its digits is 368640, while the sum is 41.

The square root of 68644544 is about 8285.2002993289. The cubic root of 68644544 is about 409.4510678839.

The spelling of 68644544 in words is "sixty-eight million, six hundred forty-four thousand, five hundred forty-four".