64315645 has 16 divisors (see below), whose sum is σ = 79070400. Its totient is φ = 50206464.

The previous prime is 64315637. The next prime is 64315651. The reversal of 64315645 is 54651346.

It is a cyclic number.

It is not a de Polignac number, because 64315645 - 2³ = 64315637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64315645.

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, 37006 + ... + 38704.

It is an arithmetic number, because the mean of its divisors is an integer number (4941900).

Almost surely, 2^64315645 is an apocalyptic number.

It is an amenable number.

64315645 is a deficient number, since it is larger than the sum of its proper divisors (14754755).

64315645 is a wasteful number, since it uses less digits than its factorization.

64315645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884.

The product of its digits is 43200, while the sum is 34.

The square root of 64315645 is about 8019.7035481369. The cubic root of 64315645 is about 400.6565156286.

The spelling of 64315645 in words is "sixty-four million, three hundred fifteen thousand, six hundred forty-five".