64397959 has 2 divisors, whose sum is σ = 64397960. Its totient is φ = 64397958.

The previous prime is 64397941. The next prime is 64397981. The reversal of 64397959 is 95979346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64397959 - 2⁷ = 64397831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64397159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32198979 + 32198980.

It is an arithmetic number, because the mean of its divisors is an integer number (32198980).

Almost surely, 2^64397959 is an apocalyptic number.

64397959 is a deficient number, since it is larger than the sum of its proper divisors (1).

64397959 is an equidigital number, since it uses as much as digits as its factorization.

64397959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 52.

The square root of 64397959 is about 8024.8338923619. The cubic root of 64397959 is about 400.8273687226.

It can be divided in two parts, 64397 and 959, that added together give a palindrome (65356).

The spelling of 64397959 in words is "sixty-four million, three hundred ninety-seven thousand, nine hundred fifty-nine".