64279507 has 2 divisors, whose sum is σ = 64279508. Its totient is φ = 64279506.

The previous prime is 64279477. The next prime is 64279517. The reversal of 64279507 is 70597246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64279507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64279507.

It is not a weakly prime, because it can be changed into another prime (64279517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32139753 + 32139754.

It is an arithmetic number, because the mean of its divisors is an integer number (32139754).

Almost surely, 2^64279507 is an apocalyptic number.

64279507 is a deficient number, since it is larger than the sum of its proper divisors (1).

64279507 is an equidigital number, since it uses as much as digits as its factorization.

64279507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 64279507 is about 8017.4501557540. The cubic root of 64279507 is about 400.5814605994.

The spelling of 64279507 in words is "sixty-four million, two hundred seventy-nine thousand, five hundred seven".