653882666 has 16 divisors (see below), whose sum is σ = 985889664. Its totient is φ = 325257504.

The previous prime is 653882657. The next prime is 653882687. The reversal of 653882666 is 666288356.

It is a happy number.

It is an unprimeable number.

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, 592271 + ... + 593373.

It is an arithmetic number, because the mean of its divisors is an integer number (61618104).

Almost surely, 2^653882666 is an apocalyptic number.

653882666 is a deficient number, since it is larger than the sum of its proper divisors (332006998).

653882666 is a wasteful number, since it uses less digits than its factorization.

653882666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365.

The product of its digits is 2488320, while the sum is 50.

The square root of 653882666 is about 25571.1295409491. The cubic root of 653882666 is about 867.9604604796.

The spelling of 653882666 in words is "six hundred fifty-three million, eight hundred eighty-two thousand, six hundred sixty-six".