64899388 has 12 divisors (see below), whose sum is σ = 113691312. Its totient is φ = 32416160.

The previous prime is 64899301. The next prime is 64899391. The reversal of 64899388 is 88399846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3745 + ... + 11992.

It is an arithmetic number, because the mean of its divisors is an integer number (9474276).

Almost surely, 2^64899388 is an apocalyptic number.

It is an amenable number.

64899388 is a deficient number, since it is larger than the sum of its proper divisors (48791924).

64899388 is a wasteful number, since it uses less digits than its factorization.

64899388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16772 (or 16770 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 55.

The square root of 64899388 is about 8056.0156405012. The cubic root of 64899388 is about 401.8650157757.

The spelling of 64899388 in words is "sixty-four million, eight hundred ninety-nine thousand, three hundred eighty-eight".