64939228 has 6 divisors (see below), whose sum is σ = 113643656. Its totient is φ = 32469612.

The previous prime is 64939213. The next prime is 64939229. The reversal of 64939228 is 82293946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64939229) 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 as a sum of consecutive naturals, namely, 8117400 + ... + 8117407.

Almost surely, 2^64939228 is an apocalyptic number.

It is an amenable number.

64939228 is a deficient number, since it is larger than the sum of its proper divisors (48704428).

64939228 is a wasteful number, since it uses less digits than its factorization.

64939228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16234811 (or 16234809 counting only the distinct ones).

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

The square root of 64939228 is about 8058.4879474998. The cubic root of 64939228 is about 401.9472303530.

The spelling of 64939228 in words is "sixty-four million, nine hundred thirty-nine thousand, two hundred twenty-eight".