63490631 has 16 divisors (see below), whose sum is σ = 69532704. Its totient is φ = 57729024.

The previous prime is 63490627. The next prime is 63490639. The reversal of 63490631 is 13609436.

It is a happy number.

63490631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 63490631 - 2² = 63490627 is a prime.

It is a super-2 number, since 2×63490631² = 8062120449556322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63490639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121136 + ... + 121658.

It is an arithmetic number, because the mean of its divisors is an integer number (4345794).

Almost surely, 2^63490631 is an apocalyptic number.

63490631 is a deficient number, since it is larger than the sum of its proper divisors (6042073).

63490631 is a wasteful number, since it uses less digits than its factorization.

63490631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 63490631 is about 7968.1008402254. The cubic root of 63490631 is about 398.9359867826.

The spelling of 63490631 in words is "sixty-three million, four hundred ninety thousand, six hundred thirty-one".