64624117 has 2 divisors, whose sum is σ = 64624118. Its totient is φ = 64624116.

The previous prime is 64624103. The next prime is 64624139. The reversal of 64624117 is 71142646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64545156 + 78961 = 8034^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 64624117 - 2⁷ = 64623989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64624177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32312058 + 32312059.

It is an arithmetic number, because the mean of its divisors is an integer number (32312059).

Almost surely, 2^64624117 is an apocalyptic number.

It is an amenable number.

64624117 is a deficient number, since it is larger than the sum of its proper divisors (1).

64624117 is an equidigital number, since it uses as much as digits as its factorization.

64624117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 64624117 is about 8038.9126752316. The cubic root of 64624117 is about 401.2960399160.

The spelling of 64624117 in words is "sixty-four million, six hundred twenty-four thousand, one hundred seventeen".