63509490 has 48 divisors (see below), whose sum is σ = 180138816. Its totient is φ = 15396000.

The previous prime is 63509477. The next prime is 63509513. The reversal of 63509490 is 9490536.

63509490 is a `hidden beast` number, since 63 + 509 + 4 + 90 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31086 + ... + 33065.

It is an arithmetic number, because the mean of its divisors is an integer number (3752892).

Almost surely, 2^63509490 is an apocalyptic number.

63509490 is an abundant number, since it is smaller than the sum of its proper divisors (116629326).

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

63509490 is a wasteful number, since it uses less digits than its factorization.

63509490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64175 (or 64172 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 63509490 is about 7969.2841585678. The cubic root of 63509490 is about 398.9754823158.

The spelling of 63509490 in words is "sixty-three million, five hundred nine thousand, four hundred ninety".