64075716 has 18 divisors (see below), whose sum is σ = 161969262. Its totient is φ = 21358560.

The previous prime is 64075709. The next prime is 64075717. The reversal of 64075716 is 61757046.

64075716 is a `hidden beast` number, since 640 + 7 + 5 + 7 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48441600 + 15634116 = 6960^2 + 3954^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1779881 = 64075716 / (6 + 4 + 0 + 7 + 5 + 7 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (64075717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 889905 + ... + 889976.

Almost surely, 2^64075716 is an apocalyptic number.

It is an amenable number.

64075716 is an abundant number, since it is smaller than the sum of its proper divisors (97893546).

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

64075716 is a wasteful number, since it uses less digits than its factorization.

64075716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779891 (or 1779886 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 64075716 is about 8004.7308511904. The cubic root of 64075716 is about 400.1576795014.

The spelling of 64075716 in words is "sixty-four million, seventy-five thousand, seven hundred sixteen".