166226667 has 8 divisors (see below), whose sum is σ = 222460560. Its totient is φ = 110405280.

The previous prime is 166226657. The next prime is 166226677. The reversal of 166226667 is 766622661.

It is an interprime number because it is at equal distance from previous prime (166226657) and next prime (166226677).

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

It is not a de Polignac number, because 166226667 - 2⁷ = 166226539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166226657) 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, 102184 + ... + 103797.

It is an arithmetic number, because the mean of its divisors is an integer number (27807570).

Almost surely, 2^166226667 is an apocalyptic number.

166226667 is a deficient number, since it is larger than the sum of its proper divisors (56233893).

166226667 is a wasteful number, since it uses less digits than its factorization.

166226667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206253.

The product of its digits is 217728, while the sum is 42.

The square root of 166226667 is about 12892.8921115474. The cubic root of 166226667 is about 549.8364990586.

The spelling of 166226667 in words is "one hundred sixty-six million, two hundred twenty-six thousand, six hundred sixty-seven".