63672531 has 32 divisors (see below), whose sum is σ = 97651008. Its totient is φ = 36556800.

The previous prime is 63672517. The next prime is 63672541. The reversal of 63672531 is 13527636.

It is not a de Polignac number, because 63672531 - 2¹⁷ = 63541459 is a prime.

It is a super-2 number, since 2×63672531² = 8108382407891922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63672492 and 63672501.

It is not an unprimeable number, because it can be changed into a prime (63672541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90481 + ... + 91181.

It is an arithmetic number, because the mean of its divisors is an integer number (3051594).

Almost surely, 2^63672531 is an apocalyptic number.

63672531 is a deficient number, since it is larger than the sum of its proper divisors (33978477).

63672531 is a wasteful number, since it uses less digits than its factorization.

63672531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 22680, while the sum is 33.

The square root of 63672531 is about 7979.5069396549. The cubic root of 63672531 is about 399.3166060132.

It can be divided in two parts, 636725 and 31, that added together give a triangular number (636756 = T₁₁₂₈).

The spelling of 63672531 in words is "sixty-three million, six hundred seventy-two thousand, five hundred thirty-one".