63616431 has 16 divisors (see below), whose sum is σ = 92241504. Its totient is φ = 38836224.

The previous prime is 63616411. The next prime is 63616439. The reversal of 63616431 is 13461636.

It is not a de Polignac number, because 63616431 - 2¹⁰ = 63615407 is a prime.

It is a super-2 number, since 2×63616431² = 8094100586355522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63616439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14970 + ... + 18743.

It is an arithmetic number, because the mean of its divisors is an integer number (5765094).

Almost surely, 2^63616431 is an apocalyptic number.

63616431 is a deficient number, since it is larger than the sum of its proper divisors (28625073).

63616431 is a wasteful number, since it uses less digits than its factorization.

63616431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33770.

The product of its digits is 7776, while the sum is 30.

The square root of 63616431 is about 7975.9909102255. The cubic root of 63616431 is about 399.1992961696.

The spelling of 63616431 in words is "sixty-three million, six hundred sixteen thousand, four hundred thirty-one".