64713889 has 2 divisors, whose sum is σ = 64713890. Its totient is φ = 64713888.

The previous prime is 64713827. The next prime is 64713941. The reversal of 64713889 is 98831746.

It is a happy number.

64713889 is nontrivially palindromic in base 6.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57380625 + 7333264 = 7575^2 + 2708^2 .

It is a cyclic number.

It is not a de Polignac number, because 64713889 - 2⁹ = 64713377 is a prime.

It is not a weakly prime, because it can be changed into another prime (64713289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32356944 + 32356945.

It is an arithmetic number, because the mean of its divisors is an integer number (32356945).

Almost surely, 2^64713889 is an apocalyptic number.

It is an amenable number.

64713889 is a deficient number, since it is larger than the sum of its proper divisors (1).

64713889 is an equidigital number, since it uses as much as digits as its factorization.

64713889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 64713889 is about 8044.4943284211. The cubic root of 64713889 is about 401.4817728451.

The spelling of 64713889 in words is "sixty-four million, seven hundred thirteen thousand, eight hundred eighty-nine".