166804656 has 40 divisors (see below), whose sum is σ = 431691120. Its totient is φ = 55501056.

The previous prime is 166804643. The next prime is 166804657. The reversal of 166804656 is 656408661.

166804656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166804657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26590 + ... + 32258.

It is an arithmetic number, because the mean of its divisors is an integer number (10792278).

Almost surely, 2^166804656 is an apocalyptic number.

166804656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166804656 is an abundant number, since it is smaller than the sum of its proper divisors (264886464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166804656 is a wasteful number, since it uses less digits than its factorization.

166804656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293 (or 6287 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 166804656 is about 12915.2876855299. The cubic root of 166804656 is about 550.4730431668.

The spelling of 166804656 in words is "one hundred sixty-six million, eight hundred four thousand, six hundred fifty-six".