64422823 has 2 divisors, whose sum is σ = 64422824. Its totient is φ = 64422822.

The previous prime is 64422781. The next prime is 64422829. The reversal of 64422823 is 32822446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64422823 - 2²¹ = 62325671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64422829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32211411 + 32211412.

It is an arithmetic number, because the mean of its divisors is an integer number (32211412).

Almost surely, 2^64422823 is an apocalyptic number.

64422823 is a deficient number, since it is larger than the sum of its proper divisors (1).

64422823 is an equidigital number, since it uses as much as digits as its factorization.

64422823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 31.

The square root of 64422823 is about 8026.3829338003. The cubic root of 64422823 is about 400.8789484594.

The spelling of 64422823 in words is "sixty-four million, four hundred twenty-two thousand, eight hundred twenty-three".