64223899 has 8 divisors (see below), whose sum is σ = 65062400. Its totient is φ = 63389736.

The previous prime is 64223891. The next prime is 64223903. The reversal of 64223899 is 99832246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64223899 - 2³ = 64223891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64223891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36952 + ... + 38650.

It is an arithmetic number, because the mean of its divisors is an integer number (8132800).

Almost surely, 2^64223899 is an apocalyptic number.

64223899 is a deficient number, since it is larger than the sum of its proper divisors (838501).

64223899 is a wasteful number, since it uses less digits than its factorization.

64223899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169.

The product of its digits is 186624, while the sum is 43.

The square root of 64223899 is about 8013.9814699062. The cubic root of 64223899 is about 400.4659133512.

The spelling of 64223899 in words is "sixty-four million, two hundred twenty-three thousand, eight hundred ninety-nine".