68638832 has 10 divisors (see below), whose sum is σ = 132987768. Its totient is φ = 34319408.

The previous prime is 68638813. The next prime is 68638841. The reversal of 68638832 is 23883686.

It is a super-2 number, since 2×68638832² = 9422578516648448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2144948 + ... + 2144979.

Almost surely, 2^68638832 is an apocalyptic number.

It is an amenable number.

68638832 is a deficient number, since it is larger than the sum of its proper divisors (64348936).

68638832 is a wasteful number, since it uses less digits than its factorization.

68638832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289935 (or 4289929 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 68638832 is about 8284.8555811191. The cubic root of 68638832 is about 409.4397105871.

The spelling of 68638832 in words is "sixty-eight million, six hundred thirty-eight thousand, eight hundred thirty-two".