64279457 has 16 divisors (see below), whose sum is σ = 75703680. Its totient is φ = 53961600.

The previous prime is 64279447. The next prime is 64279477. The reversal of 64279457 is 75497246.

It is not a de Polignac number, because 64279457 - 2⁶ = 64279393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64279427) 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, 2957 + ... + 11717.

It is an arithmetic number, because the mean of its divisors is an integer number (4731480).

Almost surely, 2^64279457 is an apocalyptic number.

It is an amenable number.

64279457 is a deficient number, since it is larger than the sum of its proper divisors (11424223).

64279457 is a wasteful number, since it uses less digits than its factorization.

64279457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8824.

The product of its digits is 423360, while the sum is 44.

The square root of 64279457 is about 8017.4470375550. The cubic root of 64279457 is about 400.5813567349.

The spelling of 64279457 in words is "sixty-four million, two hundred seventy-nine thousand, four hundred fifty-seven".