64684565 has 8 divisors (see below), whose sum is σ = 84678048. Its totient is φ = 47043280.

The previous prime is 64684561. The next prime is 64684573. The reversal of 64684565 is 56548646.

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

It is not a de Polignac number, because 64684565 - 2² = 64684561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64684561) 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, 587987 + ... + 588096.

It is an arithmetic number, because the mean of its divisors is an integer number (10584756).

Almost surely, 2^64684565 is an apocalyptic number.

It is an amenable number.

64684565 is a deficient number, since it is larger than the sum of its proper divisors (19993483).

64684565 is a wasteful number, since it uses less digits than its factorization.

64684565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176099.

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

The square root of 64684565 is about 8042.6715088955. The cubic root of 64684565 is about 401.4211221337.

The spelling of 64684565 in words is "sixty-four million, six hundred eighty-four thousand, five hundred sixty-five".