64622913 has 8 divisors (see below), whose sum is σ = 86273376. Its totient is φ = 43027200.

The previous prime is 64622903. The next prime is 64622951. The reversal of 64622913 is 31922646.

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

It is not a de Polignac number, because 64622913 - 2⁴ = 64622897 is a prime.

It is a super-2 number, since 2×64622913² = 8352241769211138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (64622903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10848 + ... + 15713.

It is an arithmetic number, because the mean of its divisors is an integer number (10784172).

Almost surely, 2^64622913 is an apocalyptic number.

It is an amenable number.

64622913 is a deficient number, since it is larger than the sum of its proper divisors (21650463).

64622913 is a wasteful number, since it uses less digits than its factorization.

64622913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27375.

The product of its digits is 15552, while the sum is 33.

The square root of 64622913 is about 8038.8377891335. The cubic root of 64622913 is about 401.2935477430.

The spelling of 64622913 in words is "sixty-four million, six hundred twenty-two thousand, nine hundred thirteen".