63139668 has 24 divisors (see below), whose sum is σ = 147470400. Its totient is φ = 21025920.

The previous prime is 63139639. The next prime is 63139691. The reversal of 63139668 is 86693136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14908 + ... + 18668.

It is an arithmetic number, because the mean of its divisors is an integer number (6144600).

Almost surely, 2^63139668 is an apocalyptic number.

It is an amenable number.

63139668 is an abundant number, since it is smaller than the sum of its proper divisors (84330732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63139668 is a wasteful number, since it uses less digits than its factorization.

63139668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167 (or 5165 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 63139668 is about 7946.0473192651. The cubic root of 63139668 is about 398.1995497732.

The spelling of 63139668 in words is "sixty-three million, one hundred thirty-nine thousand, six hundred sixty-eight".