64561248 has 36 divisors (see below), whose sum is σ = 183596868. Its totient is φ = 21520320.

The previous prime is 64561213. The next prime is 64561303. The reversal of 64561248 is 84216546.

64561248 is a `hidden beast` number, since 645 + 6 + 1 + 2 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111798 + ... + 112373.

It is an arithmetic number, because the mean of its divisors is an integer number (5099913).

Almost surely, 2^64561248 is an apocalyptic number.

It is an amenable number.

64561248 is an abundant number, since it is smaller than the sum of its proper divisors (119035620).

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

64561248 is a wasteful number, since it uses less digits than its factorization.

64561248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224187 (or 224176 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 64561248 is about 8035.0014312382. The cubic root of 64561248 is about 401.1658652607.

The spelling of 64561248 in words is "sixty-four million, five hundred sixty-one thousand, two hundred forty-eight".