64259977 has 2 divisors, whose sum is σ = 64259978. Its totient is φ = 64259976.

The previous prime is 64259971. The next prime is 64259981. The reversal of 64259977 is 77995246.

64259977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64256256 + 3721 = 8016^2 + 61^2 .

It is a cyclic number.

It is not a de Polignac number, because 64259977 - 2¹⁵ = 64227209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64259977.

It is not a weakly prime, because it can be changed into another prime (64259971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32129988 + 32129989.

It is an arithmetic number, because the mean of its divisors is an integer number (32129989).

Almost surely, 2^64259977 is an apocalyptic number.

It is an amenable number.

64259977 is a deficient number, since it is larger than the sum of its proper divisors (1).

64259977 is an equidigital number, since it uses as much as digits as its factorization.

64259977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 49.

The square root of 64259977 is about 8016.2320949434. The cubic root of 64259977 is about 400.5408870234.

The spelling of 64259977 in words is "sixty-four million, two hundred fifty-nine thousand, nine hundred seventy-seven".