68638132 has 12 divisors (see below), whose sum is σ = 120255520. Its totient is φ = 34279416.

The previous prime is 68638117. The next prime is 68638133. The reversal of 68638132 is 23183686.

It is a super-2 number, since 2×68638132² = 9422386328898848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68638091 and 68638100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68638133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5832 + ... + 13087.

Almost surely, 2^68638132 is an apocalyptic number.

It is an amenable number.

68638132 is a deficient number, since it is larger than the sum of its proper divisors (51617388).

68638132 is a wasteful number, since it uses less digits than its factorization.

68638132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19830 (or 19828 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 68638132 is about 8284.8133352538. The cubic root of 68638132 is about 409.4383187182.

The spelling of 68638132 in words is "sixty-eight million, six hundred thirty-eight thousand, one hundred thirty-two".