64408716 has 48 divisors (see below), whose sum is σ = 176813280. Its totient is φ = 20206080.

The previous prime is 64408697. The next prime is 64408723. The reversal of 64408716 is 61780446.

64408716 is a `hidden beast` number, since 644 + 0 + 8 + 7 + 1 + 6 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15705 + ... + 19376.

It is an arithmetic number, because the mean of its divisors is an integer number (3683610).

Almost surely, 2^64408716 is an apocalyptic number.

It is an amenable number.

64408716 is an abundant number, since it is smaller than the sum of its proper divisors (112404564).

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

64408716 is a wasteful number, since it uses less digits than its factorization.

64408716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35111 (or 35103 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 64408716 is about 8025.5040963169. The cubic root of 64408716 is about 400.8496854751.

The spelling of 64408716 in words is "sixty-four million, four hundred eight thousand, seven hundred sixteen".