64716929 has 2 divisors, whose sum is σ = 64716930. Its totient is φ = 64716928.

The previous prime is 64716919. The next prime is 64716931. The reversal of 64716929 is 92961746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58491904 + 6225025 = 7648^2 + 2495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64716929 is a prime.

It is a Sophie Germain prime.

Together with 64716931, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64716929.

It is not a weakly prime, because it can be changed into another prime (64716919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32358464 + 32358465.

It is an arithmetic number, because the mean of its divisors is an integer number (32358465).

Almost surely, 2^64716929 is an apocalyptic number.

It is an amenable number.

64716929 is a deficient number, since it is larger than the sum of its proper divisors (1).

64716929 is an equidigital number, since it uses as much as digits as its factorization.

64716929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 64716929 is about 8044.6832753067. The cubic root of 64716929 is about 401.4880594166.

It can be divided in two parts, 647 and 16929, that added together give a cube (17576 = 26³).

The spelling of 64716929 in words is "sixty-four million, seven hundred sixteen thousand, nine hundred twenty-nine".