166213167 has 8 divisors (see below), whose sum is σ = 221682096. Its totient is φ = 110776512.

The previous prime is 166213147. The next prime is 166213171. The reversal of 166213167 is 761312661.

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

It is not a de Polignac number, because 166213167 - 2⁷ = 166213039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166213147) 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, 9283 + ... + 20459.

It is an arithmetic number, because the mean of its divisors is an integer number (27710262).

Almost surely, 2^166213167 is an apocalyptic number.

166213167 is a deficient number, since it is larger than the sum of its proper divisors (55468929).

166213167 is a wasteful number, since it uses less digits than its factorization.

166213167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16137.

The product of its digits is 9072, while the sum is 33.

The square root of 166213167 is about 12892.3685566307. The cubic root of 166213167 is about 549.8216137741.

The spelling of 166213167 in words is "one hundred sixty-six million, two hundred thirteen thousand, one hundred sixty-seven".