64242565 has 16 divisors (see below), whose sum is σ = 81254016. Its totient is φ = 48664000.

The previous prime is 64242533. The next prime is 64242587. The reversal of 64242565 is 56524246.

It is not a de Polignac number, because 64242565 - 2⁵ = 64242533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64242565.

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, 8850 + ... + 14380.

It is an arithmetic number, because the mean of its divisors is an integer number (5078376).

Almost surely, 2^64242565 is an apocalyptic number.

It is an amenable number.

64242565 is a deficient number, since it is larger than the sum of its proper divisors (17011451).

64242565 is a wasteful number, since it uses less digits than its factorization.

64242565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5660.

The product of its digits is 57600, while the sum is 34.

The square root of 64242565 is about 8015.1459749651. The cubic root of 64242565 is about 400.5047066601.

The spelling of 64242565 in words is "sixty-four million, two hundred forty-two thousand, five hundred sixty-five".