656610166 has 8 divisors (see below), whose sum is σ = 986513400. Its totient is φ = 327772368.

The previous prime is 656610139. The next prime is 656610167. The reversal of 656610166 is 661016656.

656610166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×656610166² = 862273820189095112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656610167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264816 + ... + 267283.

It is an arithmetic number, because the mean of its divisors is an integer number (123314175).

Almost surely, 2^656610166 is an apocalyptic number.

656610166 is a deficient number, since it is larger than the sum of its proper divisors (329903234).

656610166 is a wasteful number, since it uses less digits than its factorization.

656610166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532718.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 656610166 is about 25624.4056711566. The cubic root of 656610166 is about 869.1656094946.

The spelling of 656610166 in words is "six hundred fifty-six million, six hundred ten thousand, one hundred sixty-six".