68724512 has 12 divisors (see below), whose sum is σ = 135301446. Its totient is φ = 34362240.

The previous prime is 68724493. The next prime is 68724547. The reversal of 68724512 is 21542786.

It can be written as a sum of positive squares in only one way, i.e., 68624656 + 99856 = 8284^2 + 316^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073789 + ... + 1073852.

Almost surely, 2^68724512 is an apocalyptic number.

It is an amenable number.

68724512 is a deficient number, since it is larger than the sum of its proper divisors (66576934).

68724512 is a wasteful number, since it uses less digits than its factorization.

68724512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147651 (or 2147643 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 68724512 is about 8290.0248491787. The cubic root of 68724512 is about 409.6100039264.

The spelling of 68724512 in words is "sixty-eight million, seven hundred twenty-four thousand, five hundred twelve".