64099044 has 108 divisors (see below), whose sum is σ = 176673588. Its totient is φ = 19584000.

The previous prime is 64099043. The next prime is 64099051. The reversal of 64099044 is 44099046.

64099044 is a `hidden beast` number, since 640 + 9 + 9 + 0 + 4 + 4 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 5116644 + 58982400 = 2262^2 + 7680^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64099043) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 634594 + ... + 634694.

Almost surely, 2^64099044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64099044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88336794).

64099044 is an abundant number, since it is smaller than the sum of its proper divisors (112574544).

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

64099044 is a wasteful number, since it uses less digits than its factorization.

64099044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 64099044 is about 8006.1878569017. The cubic root of 64099044 is about 400.2062353159.

The spelling of 64099044 in words is "sixty-four million, ninety-nine thousand, forty-four".