64518407 has 2 divisors, whose sum is σ = 64518408. Its totient is φ = 64518406.

The previous prime is 64518401. The next prime is 64518449. The reversal of 64518407 is 70481546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64518407 - 2¹⁴ = 64502023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64518401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32259203 + 32259204.

It is an arithmetic number, because the mean of its divisors is an integer number (32259204).

Almost surely, 2^64518407 is an apocalyptic number.

64518407 is a deficient number, since it is larger than the sum of its proper divisors (1).

64518407 is an equidigital number, since it uses as much as digits as its factorization.

64518407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 64518407 is about 8032.3350901217. The cubic root of 64518407 is about 401.0771115567.

The spelling of 64518407 in words is "sixty-four million, five hundred eighteen thousand, four hundred seven".