64463136 has 48 divisors (see below), whose sum is σ = 174682368. Its totient is φ = 20793600.

The previous prime is 64463129. The next prime is 64463171. The reversal of 64463136 is 63136446.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 64463097 and 64463106.

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, 7855 + ... + 13806.

It is an arithmetic number, because the mean of its divisors is an integer number (3639216).

Almost surely, 2^64463136 is an apocalyptic number.

It is an amenable number.

64463136 is an abundant number, since it is smaller than the sum of its proper divisors (110219232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64463136 is a wasteful number, since it uses less digits than its factorization.

64463136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21705 (or 21697 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 64463136 is about 8028.8938216918. The cubic root of 64463136 is about 400.9625485594.

The spelling of 64463136 in words is "sixty-four million, four hundred sixty-three thousand, one hundred thirty-six".