64818923 has 8 divisors (see below), whose sum is σ = 72057216. Its totient is φ = 57902400.

The previous prime is 64818913. The next prime is 64818961. The reversal of 64818923 is 32981846.

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 64818923 - 2⁸ = 64818667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64818913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80018 + ... + 80823.

It is an arithmetic number, because the mean of its divisors is an integer number (9007152).

Almost surely, 2^64818923 is an apocalyptic number.

64818923 is a deficient number, since it is larger than the sum of its proper divisors (7238293).

64818923 is a wasteful number, since it uses less digits than its factorization.

64818923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160885.

The product of its digits is 82944, while the sum is 41.

The square root of 64818923 is about 8051.0199974910. The cubic root of 64818923 is about 401.6988640210.

The spelling of 64818923 in words is "sixty-four million, eight hundred eighteen thousand, nine hundred twenty-three".