64327665 has 32 divisors (see below), whose sum is σ = 108262656. Its totient is φ = 32552960.

The previous prime is 64327663. The next prime is 64327667. The reversal of 64327665 is 56672346.

It is an interprime number because it is at equal distance from previous prime (64327663) and next prime (64327667).

It is not a de Polignac number, because 64327665 - 2¹ = 64327663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64327663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46585 + ... + 47945.

It is an arithmetic number, because the mean of its divisors is an integer number (3383208).

Almost surely, 2^64327665 is an apocalyptic number.

It is an amenable number.

64327665 is a deficient number, since it is larger than the sum of its proper divisors (43934991).

64327665 is a wasteful number, since it uses less digits than its factorization.

64327665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

The product of its digits is 181440, while the sum is 39.

The square root of 64327665 is about 8020.4529173857. The cubic root of 64327665 is about 400.6814737412.

The spelling of 64327665 in words is "sixty-four million, three hundred twenty-seven thousand, six hundred sixty-five".