68537936 has 20 divisors (see below), whose sum is σ = 133221012. Its totient is φ = 34158336.

The previous prime is 68537927. The next prime is 68537939. The reversal of 68537936 is 63973586.

It can be written as a sum of positive squares in 2 ways, for example, as 17272336 + 51265600 = 4156^2 + 7160^2 .

It is a super-2 number, since 2×68537936² = 9394897342280192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68537939) 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 3 ways as a sum of consecutive naturals, for example, 1685 + ... + 11828.

Almost surely, 2^68537936 is an apocalyptic number.

It is an amenable number.

68537936 is a deficient number, since it is larger than the sum of its proper divisors (64683076).

68537936 is a wasteful number, since it uses less digits than its factorization.

68537936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13838 (or 13832 counting only the distinct ones).

The product of its digits is 816480, while the sum is 47.

The square root of 68537936 is about 8278.7641589793. The cubic root of 68537936 is about 409.2389928784.

The spelling of 68537936 in words is "sixty-eight million, five hundred thirty-seven thousand, nine hundred thirty-six".