64488065 has 8 divisors (see below), whose sum is σ = 78255720. Its totient is φ = 51010432.

The previous prime is 64488049. The next prime is 64488079. The reversal of 64488065 is 56088446.

It can be written as a sum of positive squares in 4 ways, for example, as 8042896 + 56445169 = 2836^2 + 7513^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64488065 - 2⁴ = 64488049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72014 + ... + 72903.

It is an arithmetic number, because the mean of its divisors is an integer number (9781965).

Almost surely, 2^64488065 is an apocalyptic number.

It is an amenable number.

64488065 is a deficient number, since it is larger than the sum of its proper divisors (13767655).

64488065 is a wasteful number, since it uses less digits than its factorization.

64488065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145011.

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 64488065 is about 8030.4461270841. The cubic root of 64488065 is about 401.0142282624.

The spelling of 64488065 in words is "sixty-four million, four hundred eighty-eight thousand, sixty-five".