64556365 has 8 divisors (see below), whose sum is σ = 77896728. Its totient is φ = 51359040.

The previous prime is 64556363. The next prime is 64556369. The reversal of 64556365 is 56365546.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 252004 + 64304361 = 502^2 + 8019^2 .

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

It is not a de Polignac number, because 64556365 - 2¹ = 64556363 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 (64556363) 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, 34762 + ... + 36571.

It is an arithmetic number, because the mean of its divisors is an integer number (9737091).

Almost surely, 2^64556365 is an apocalyptic number.

It is an amenable number.

64556365 is a deficient number, since it is larger than the sum of its proper divisors (13340363).

64556365 is a wasteful number, since it uses less digits than its factorization.

64556365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71519.

The product of its digits is 324000, while the sum is 40.

The square root of 64556365 is about 8034.6975674259. The cubic root of 64556365 is about 401.1557511320.

The spelling of 64556365 in words is "sixty-four million, five hundred fifty-six thousand, three hundred sixty-five".