64350865 has 16 divisors (see below), whose sum is σ = 82328400. Its totient is φ = 48117760.

The previous prime is 64350857. The next prime is 64350889. The reversal of 64350865 is 56805346.

It can be written as a sum of positive squares in 8 ways, for example, as 7333264 + 57017601 = 2708^2 + 7551^2 .

It is not a de Polignac number, because 64350865 - 2³ = 64350857 is a prime.

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, 10125 + ... + 15205.

It is an arithmetic number, because the mean of its divisors is an integer number (5145525).

Almost surely, 2^64350865 is an apocalyptic number.

It is an amenable number.

64350865 is a deficient number, since it is larger than the sum of its proper divisors (17977535).

64350865 is a wasteful number, since it uses less digits than its factorization.

64350865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 64350865 is about 8021.8990893678. The cubic root of 64350865 is about 400.7296370153.

The spelling of 64350865 in words is "sixty-four million, three hundred fifty thousand, eight hundred sixty-five".