64318999 has 2 divisors, whose sum is σ = 64319000. Its totient is φ = 64318998.

The previous prime is 64318993. The next prime is 64319033. The reversal of 64318999 is 99981346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64318999 - 2⁹ = 64318487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64318993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32159499 + 32159500.

It is an arithmetic number, because the mean of its divisors is an integer number (32159500).

Almost surely, 2^64318999 is an apocalyptic number.

64318999 is a deficient number, since it is larger than the sum of its proper divisors (1).

64318999 is an equidigital number, since it uses as much as digits as its factorization.

64318999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 49.

The square root of 64318999 is about 8019.9126553847. The cubic root of 64318999 is about 400.6634801268.

The spelling of 64318999 in words is "sixty-four million, three hundred eighteen thousand, nine hundred ninety-nine".