64207823 has 2 divisors, whose sum is σ = 64207824. Its totient is φ = 64207822.

The previous prime is 64207817. The next prime is 64207841. The reversal of 64207823 is 32870246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64207823 - 2⁸ = 64207567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64207823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64207813) 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, 32103911 + 32103912.

It is an arithmetic number, because the mean of its divisors is an integer number (32103912).

Almost surely, 2^64207823 is an apocalyptic number.

64207823 is a deficient number, since it is larger than the sum of its proper divisors (1).

64207823 is an equidigital number, since it uses as much as digits as its factorization.

64207823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 64207823 is about 8012.9784100545. The cubic root of 64207823 is about 400.4324967811.

The spelling of 64207823 in words is "sixty-four million, two hundred seven thousand, eight hundred twenty-three".