64636532 has 24 divisors (see below), whose sum is σ = 119265216. Its totient is φ = 30590208.

The previous prime is 64636493. The next prime is 64636543. The reversal of 64636532 is 23563646.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 64636492 and 64636501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5303 + ... + 12545.

It is an arithmetic number, because the mean of its divisors is an integer number (4969384).

Almost surely, 2^64636532 is an apocalyptic number.

It is an amenable number.

64636532 is a deficient number, since it is larger than the sum of its proper divisors (54628684).

64636532 is a wasteful number, since it uses less digits than its factorization.

64636532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367 (or 7365 counting only the distinct ones).

The product of its digits is 77760, while the sum is 35.

The square root of 64636532 is about 8039.6848196929. The cubic root of 64636532 is about 401.3217360573.

The spelling of 64636532 in words is "sixty-four million, six hundred thirty-six thousand, five hundred thirty-two".