63503920 has 40 divisors (see below), whose sum is σ = 154070496. Its totient is φ = 24296448.

The previous prime is 63503899. The next prime is 63503963. The reversal of 63503920 is 2930536.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 15417 + ... + 19096.

Almost surely, 2^63503920 is an apocalyptic number.

It is an amenable number.

63503920 is an abundant number, since it is smaller than the sum of its proper divisors (90566576).

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

63503920 is a wasteful number, since it uses less digits than its factorization.

63503920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34549 (or 34543 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 63503920 is about 7968.9346841344. The cubic root of 63503920 is about 398.9638181356.

The spelling of 63503920 in words is "sixty-three million, five hundred three thousand, nine hundred twenty".