166666675 has 12 divisors (see below), whose sum is σ = 236190736. Its totient is φ = 114285600.

The previous prime is 166666673. The next prime is 166666693. The reversal of 166666675 is 576666661.

It is a happy number.

It is not a de Polignac number, because 166666675 - 2¹ = 166666673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166666673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476016 + ... + 476365.

Almost surely, 2^166666675 is an apocalyptic number.

166666675 is a deficient number, since it is larger than the sum of its proper divisors (69524061).

166666675 is an equidigital number, since it uses as much as digits as its factorization.

166666675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952398 (or 952393 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The square root of 166666675 is about 12909.9448101067. The cubic root of 166666675 is about 550.3212173211.

The spelling of 166666675 in words is "one hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-five".