64204565 has 16 divisors (see below), whose sum is σ = 81478656. Its totient is φ = 48489600.

The previous prime is 64204549. The next prime is 64204573. The reversal of 64204565 is 56540246.

64204565 is nontrivially palindromic in base 15.

It is not a de Polignac number, because 64204565 - 2⁴ = 64204549 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1304 + ... + 11406.

It is an arithmetic number, because the mean of its divisors is an integer number (5092416).

Almost surely, 2^64204565 is an apocalyptic number.

It is an amenable number.

64204565 is a deficient number, since it is larger than the sum of its proper divisors (17274091).

64204565 is a wasteful number, since it uses less digits than its factorization.

64204565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 64204565 is about 8012.7751122816. The cubic root of 64204565 is about 400.4257238207.

The spelling of 64204565 in words is "sixty-four million, two hundred four thousand, five hundred sixty-five".