63990772 has 12 divisors (see below), whose sum is σ = 113093316. Its totient is φ = 31678400.

The previous prime is 63990763. The next prime is 63990799. The reversal of 63990772 is 27709936.

It can be written as a sum of positive squares in 2 ways, for example, as 62157456 + 1833316 = 7884^2 + 1354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78793 + ... + 79600.

It is an arithmetic number, because the mean of its divisors is an integer number (9424443).

Almost surely, 2^63990772 is an apocalyptic number.

It is an amenable number.

63990772 is a deficient number, since it is larger than the sum of its proper divisors (49102544).

63990772 is a wasteful number, since it uses less digits than its factorization.

63990772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158498 (or 158496 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 63990772 is about 7999.4232292085. The cubic root of 63990772 is about 399.9807740759.

The spelling of 63990772 in words is "sixty-three million, nine hundred ninety thousand, seven hundred seventy-two".