63936531 has 6 divisors (see below), whose sum is σ = 92352780. Its totient is φ = 42624348.

The previous prime is 63936493. The next prime is 63936533. The reversal of 63936531 is 13563936.

It is not a de Polignac number, because 63936531 - 2¹⁰ = 63935507 is a prime.

It is a super-2 number, since 2×63936531² = 8175759992627922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63936533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3552021 + ... + 3552038.

It is an arithmetic number, because the mean of its divisors is an integer number (15392130).

Almost surely, 2^63936531 is an apocalyptic number.

63936531 is a deficient number, since it is larger than the sum of its proper divisors (28416249).

63936531 is a wasteful number, since it uses less digits than its factorization.

63936531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7104065 (or 7104062 counting only the distinct ones).

The product of its digits is 43740, while the sum is 36.

The square root of 63936531 is about 7996.0322035370. The cubic root of 63936531 is about 399.8677291826.

The spelling of 63936531 in words is "sixty-three million, nine hundred thirty-six thousand, five hundred thirty-one".