655502666 has 24 divisors (see below), whose sum is σ = 1216812384. Its totient is φ = 259318800.

The previous prime is 655502663. The next prime is 655502681. The reversal of 655502666 is 666205556.

It is not an unprimeable number, because it can be changed into a prime (655502663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136160 + ... + 140891.

It is an arithmetic number, because the mean of its divisors is an integer number (50700516).

Almost surely, 2^655502666 is an apocalyptic number.

655502666 is a deficient number, since it is larger than the sum of its proper divisors (561309718).

655502666 is a wasteful number, since it uses less digits than its factorization.

655502666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277086 (or 277073 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The square root of 655502666 is about 25602.7862936830. The cubic root of 655502666 is about 868.6766625393.

The spelling of 655502666 in words is "six hundred fifty-five million, five hundred two thousand, six hundred sixty-six".