63990502 has 4 divisors (see below), whose sum is σ = 95985756. Its totient is φ = 31995250.

The previous prime is 63990473. The next prime is 63990523. The reversal of 63990502 is 20509936.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15997624 + ... + 15997627.

It is an arithmetic number, because the mean of its divisors is an integer number (23996439).

Almost surely, 2^63990502 is an apocalyptic number.

63990502 is a deficient number, since it is larger than the sum of its proper divisors (31995254).

63990502 is a wasteful number, since it uses less digits than its factorization.

63990502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31995253.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 63990502 is about 7999.4063529740. The cubic root of 63990502 is about 399.9802115211.

The spelling of 63990502 in words is "sixty-three million, nine hundred ninety thousand, five hundred two".