64839922 has 16 divisors (see below), whose sum is σ = 111333312. Its totient is φ = 27743760.

The previous prime is 64839919. The next prime is 64839923. The reversal of 64839922 is 22993846.

It is not an unprimeable number, because it can be changed into a prime (64839923) 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, 6172 + ... + 12952.

It is an arithmetic number, because the mean of its divisors is an integer number (6958332).

Almost surely, 2^64839922 is an apocalyptic number.

64839922 is a deficient number, since it is larger than the sum of its proper divisors (46493390).

64839922 is a wasteful number, since it uses less digits than its factorization.

64839922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7473.

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

The square root of 64839922 is about 8052.3240123582. The cubic root of 64839922 is about 401.7422379994.

The spelling of 64839922 in words is "sixty-four million, eight hundred thirty-nine thousand, nine hundred twenty-two".