166170270 has 48 divisors (see below), whose sum is σ = 463924368. Its totient is φ = 37981440.

The previous prime is 166170217. The next prime is 166170281. The reversal of 166170270 is 72071661.

It is a happy number.

It is a super-2 number, since 2×166170270² = 55225117263745800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55051 + ... + 57990.

It is an arithmetic number, because the mean of its divisors is an integer number (9665091).

Almost surely, 2^166170270 is an apocalyptic number.

166170270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166170270 is an abundant number, since it is smaller than the sum of its proper divisors (297754098).

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

166170270 is a wasteful number, since it uses less digits than its factorization.

166170270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113065 (or 113058 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 166170270 is about 12890.7047906621. The cubic root of 166170270 is about 549.7743096053.

The spelling of 166170270 in words is "one hundred sixty-six million, one hundred seventy thousand, two hundred seventy".