64532865 has 8 divisors (see below), whose sum is σ = 103252608. Its totient is φ = 34417520.

The previous prime is 64532863. The next prime is 64532879. The reversal of 64532865 is 56823546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64532865 - 2¹ = 64532863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64532861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2151081 + ... + 2151110.

It is an arithmetic number, because the mean of its divisors is an integer number (12906576).

Almost surely, 2^64532865 is an apocalyptic number.

It is an amenable number.

64532865 is a deficient number, since it is larger than the sum of its proper divisors (38719743).

64532865 is a wasteful number, since it uses less digits than its factorization.

64532865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302199.

The product of its digits is 172800, while the sum is 39.

The square root of 64532865 is about 8033.2350270610. The cubic root of 64532865 is about 401.1070685878.

The spelling of 64532865 in words is "sixty-four million, five hundred thirty-two thousand, eight hundred sixty-five".