64623117 has 16 divisors (see below), whose sum is σ = 93320640. Its totient is φ = 39541632.

The previous prime is 64623101. The next prime is 64623179. The reversal of 64623117 is 71132646.

It is not a de Polignac number, because 64623117 - 2⁴ = 64623101 is a prime.

It is a super-2 number, since 2×64623117² = 8352294501591378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64623197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2353 + ... + 11609.

It is an arithmetic number, because the mean of its divisors is an integer number (5832540).

Almost surely, 2^64623117 is an apocalyptic number.

It is an amenable number.

64623117 is a deficient number, since it is larger than the sum of its proper divisors (28697523).

64623117 is a wasteful number, since it uses less digits than its factorization.

64623117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9452.

The product of its digits is 6048, while the sum is 30.

The square root of 64623117 is about 8038.8504775248. The cubic root of 64623117 is about 401.2939700070.

The spelling of 64623117 in words is "sixty-four million, six hundred twenty-three thousand, one hundred seventeen".