64648565 has 8 divisors (see below), whose sum is σ = 79382688. Its totient is φ = 50515920.

The previous prime is 64648541. The next prime is 64648579. The reversal of 64648565 is 56584646.

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

It is not a de Polignac number, because 64648565 - 2¹² = 64644469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 150131 + ... + 150560.

It is an arithmetic number, because the mean of its divisors is an integer number (9922836).

Almost surely, 2^64648565 is an apocalyptic number.

It is an amenable number.

64648565 is a deficient number, since it is larger than the sum of its proper divisors (14734123).

64648565 is a wasteful number, since it uses less digits than its factorization.

64648565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300739.

The product of its digits is 691200, while the sum is 44.

The square root of 64648565 is about 8040.4331350991. The cubic root of 64648565 is about 401.3466384082.

The spelling of 64648565 in words is "sixty-four million, six hundred forty-eight thousand, five hundred sixty-five".