655515166 has 4 divisors (see below), whose sum is σ = 983272752. Its totient is φ = 327757582.

The previous prime is 655515163. The next prime is 655515173. The reversal of 655515166 is 661515556.

655515166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655515163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163878790 + ... + 163878793.

It is an arithmetic number, because the mean of its divisors is an integer number (245818188).

Almost surely, 2^655515166 is an apocalyptic number.

655515166 is a deficient number, since it is larger than the sum of its proper divisors (327757586).

655515166 is a wasteful number, since it uses less digits than its factorization.

655515166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327757585.

The product of its digits is 135000, while the sum is 40.

The square root of 655515166 is about 25603.0304065749. The cubic root of 655515166 is about 868.6821841996.

The spelling of 655515166 in words is "six hundred fifty-five million, five hundred fifteen thousand, one hundred sixty-six".