64338877 has 2 divisors, whose sum is σ = 64338878. Its totient is φ = 64338876.

The previous prime is 64338823. The next prime is 64338887. The reversal of 64338877 is 77883346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63457156 + 881721 = 7966^2 + 939^2 .

It is a cyclic number.

It is not a de Polignac number, because 64338877 - 2⁷ = 64338749 is a prime.

It is a super-2 number, since 2×64338877² = 8278982187242258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64338887) 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, 32169438 + 32169439.

It is an arithmetic number, because the mean of its divisors is an integer number (32169439).

Almost surely, 2^64338877 is an apocalyptic number.

It is an amenable number.

64338877 is a deficient number, since it is larger than the sum of its proper divisors (1).

64338877 is an equidigital number, since it uses as much as digits as its factorization.

64338877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The square root of 64338877 is about 8021.1518499527. The cubic root of 64338877 is about 400.7047513347.

The spelling of 64338877 in words is "sixty-four million, three hundred thirty-eight thousand, eight hundred seventy-seven".