64418957 has 4 divisors (see below), whose sum is σ = 64664160. Its totient is φ = 64173756.

The previous prime is 64418953. The next prime is 64418971. The reversal of 64418957 is 75981446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64418957 - 2² = 64418953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64418951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122207 + ... + 122732.

It is an arithmetic number, because the mean of its divisors is an integer number (16166040).

Almost surely, 2^64418957 is an apocalyptic number.

It is an amenable number.

64418957 is a deficient number, since it is larger than the sum of its proper divisors (245203).

64418957 is a wasteful number, since it uses less digits than its factorization.

64418957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245202.

The product of its digits is 241920, while the sum is 44.

The square root of 64418957 is about 8026.1420994149. The cubic root of 64418957 is about 400.8709294119.

The spelling of 64418957 in words is "sixty-four million, four hundred eighteen thousand, nine hundred fifty-seven".