64217365 has 8 divisors (see below), whose sum is σ = 77104440. Its totient is φ = 51344832.

The previous prime is 64217353. The next prime is 64217383. The reversal of 64217365 is 56371246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37859409 + 26357956 = 6153^2 + 5134^2 .

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 64217365 - 2⁹ = 64216853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64217365.

It is a congruent number.

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, 13071 + ... + 17299.

It is an arithmetic number, because the mean of its divisors is an integer number (9638055).

Almost surely, 2^64217365 is an apocalyptic number.

It is an amenable number.

64217365 is a deficient number, since it is larger than the sum of its proper divisors (12887075).

64217365 is a wasteful number, since it uses less digits than its factorization.

64217365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7271.

The product of its digits is 30240, while the sum is 34.

The square root of 64217365 is about 8013.5737970022. The cubic root of 64217365 is about 400.4523320465.

The spelling of 64217365 in words is "sixty-four million, two hundred seventeen thousand, three hundred sixty-five".