64936679 has 2 divisors, whose sum is σ = 64936680. Its totient is φ = 64936678.

The previous prime is 64936643. The next prime is 64936681. The reversal of 64936679 is 97663946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64936679 is a prime.

Together with 64936681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64936609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32468339 + 32468340.

It is an arithmetic number, because the mean of its divisors is an integer number (32468340).

Almost surely, 2^64936679 is an apocalyptic number.

64936679 is a deficient number, since it is larger than the sum of its proper divisors (1).

64936679 is an equidigital number, since it uses as much as digits as its factorization.

64936679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 50.

The square root of 64936679 is about 8058.3297897269. The cubic root of 64936679 is about 401.9419711954.

The spelling of 64936679 in words is "sixty-four million, nine hundred thirty-six thousand, six hundred seventy-nine".