64736244 has 36 divisors (see below), whose sum is σ = 164299044. Its totient is φ = 21491712.

The previous prime is 64736233. The next prime is 64736261. The reversal of 64736244 is 44263746.

64736244 is a `hidden beast` number, since 647 + 3 + 6 + 2 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47196900 + 17539344 = 6870^2 + 4188^2 .

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 junction number, because it is equal to n+sod(n) for n = 64736199 and 64736208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5754 + ... + 12750.

Almost surely, 2^64736244 is an apocalyptic number.

It is an amenable number.

64736244 is an abundant number, since it is smaller than the sum of its proper divisors (99562800).

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

64736244 is a wasteful number, since it uses less digits than its factorization.

64736244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264 (or 7259 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 64736244 is about 8045.8836680628. The cubic root of 64736244 is about 401.5279972950.

It can be divided in two parts, 64736 and 244, that added together give a triangular number (64980 = T₃₆₀).

The spelling of 64736244 in words is "sixty-four million, seven hundred thirty-six thousand, two hundred forty-four".