166770331 has 8 divisors (see below), whose sum is σ = 205255904. Its totient is φ = 131950080.

The previous prime is 166770301. The next prime is 166770341. The reversal of 166770331 is 133077661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 166770331 - 2⁷ = 166770203 is a prime.

It is a super-2 number, since 2×166770331² = 55624686603699122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166770301) 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, 916230 + ... + 916411.

It is an arithmetic number, because the mean of its divisors is an integer number (25656988).

Almost surely, 2^166770331 is an apocalyptic number.

166770331 is a deficient number, since it is larger than the sum of its proper divisors (38485573).

166770331 is a wasteful number, since it uses less digits than its factorization.

166770331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832661.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 166770331 is about 12913.9587656148. The cubic root of 166770331 is about 550.4352818639.

The spelling of 166770331 in words is "one hundred sixty-six million, seven hundred seventy thousand, three hundred thirty-one".