68693924 has 24 divisors (see below), whose sum is σ = 133928760. Its totient is φ = 30610944.

The previous prime is 68693909. The next prime is 68693927. The reversal of 68693924 is 42939686.

It can be written as a sum of positive squares in 4 ways, for example, as 8352100 + 60341824 = 2890^2 + 7768^2 .

It is not an unprimeable number, because it can be changed into a prime (68693927) 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 7 ways as a sum of consecutive naturals, for example, 21269 + ... + 24284.

It is an arithmetic number, because the mean of its divisors is an integer number (5580365).

Almost surely, 2^68693924 is an apocalyptic number.

It is an amenable number.

68693924 is a deficient number, since it is larger than the sum of its proper divisors (65234836).

68693924 is a wasteful number, since it uses less digits than its factorization.

68693924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45599 (or 45597 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 68693924 is about 8288.1797760425. The cubic root of 68693924 is about 409.5492249810.

The spelling of 68693924 in words is "sixty-eight million, six hundred ninety-three thousand, nine hundred twenty-four".