166170007 has 4 divisors (see below), whose sum is σ = 170222976. Its totient is φ = 162117040.

The previous prime is 166169987. The next prime is 166170041. The reversal of 166170007 is 700071661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700071661 = 173 ⋅4046657.

It is a cyclic number.

It is not a de Polignac number, because 166170007 - 2¹¹ = 166167959 is a prime.

It is a super-2 number, since 2×166170007² = 55224942452760098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166170047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2026423 + ... + 2026504.

It is an arithmetic number, because the mean of its divisors is an integer number (42555744).

Almost surely, 2^166170007 is an apocalyptic number.

166170007 is a deficient number, since it is larger than the sum of its proper divisors (4052969).

166170007 is an equidigital number, since it uses as much as digits as its factorization.

166170007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052968.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 166170007 is about 12890.6945895091. The cubic root of 166170007 is about 549.7740195600.

The spelling of 166170007 in words is "one hundred sixty-six million, one hundred seventy thousand, seven".