64972679 has 2 divisors, whose sum is σ = 64972680. Its totient is φ = 64972678.

The previous prime is 64972669. The next prime is 64972711. The reversal of 64972679 is 97627946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64972679 - 2⁸ = 64972423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64972619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32486339 + 32486340.

It is an arithmetic number, because the mean of its divisors is an integer number (32486340).

Almost surely, 2^64972679 is an apocalyptic number.

64972679 is a deficient number, since it is larger than the sum of its proper divisors (1).

64972679 is an equidigital number, since it uses as much as digits as its factorization.

64972679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The square root of 64972679 is about 8060.5631937229. The cubic root of 64972679 is about 402.0162345036.

The spelling of 64972679 in words is "sixty-four million, nine hundred seventy-two thousand, six hundred seventy-nine".