64010865 has 32 divisors (see below), whose sum is σ = 109143936. Its totient is φ = 31923200.

The previous prime is 64010861. The next prime is 64010879. The reversal of 64010865 is 56801046.

It is not a de Polignac number, because 64010865 - 2² = 64010861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64010861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43390 + ... + 44840.

It is an arithmetic number, because the mean of its divisors is an integer number (3410748).

Almost surely, 2^64010865 is an apocalyptic number.

It is an amenable number.

64010865 is a deficient number, since it is larger than the sum of its proper divisors (45133071).

64010865 is a wasteful number, since it uses less digits than its factorization.

64010865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 64010865 is about 8000.6790336821. The cubic root of 64010865 is about 400.0226341359.

The spelling of 64010865 in words is "sixty-four million, ten thousand, eight hundred sixty-five".