166666707 has 16 divisors (see below), whose sum is σ = 247188480. Its totient is φ = 110987496.

The previous prime is 166666693. The next prime is 166666711. The reversal of 166666707 is 707666661.

It is not a de Polignac number, because 166666707 - 2¹⁰ = 166665683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166666207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25798 + ... + 31604.

It is an arithmetic number, because the mean of its divisors is an integer number (15449280).

Almost surely, 2^166666707 is an apocalyptic number.

166666707 is a deficient number, since it is larger than the sum of its proper divisors (80521773).

166666707 is a wasteful number, since it uses less digits than its factorization.

166666707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6879 (or 6873 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 166666707 is about 12909.9460494612. The cubic root of 166666707 is about 550.3212525417.

The spelling of 166666707 in words is "one hundred sixty-six million, six hundred sixty-six thousand, seven hundred seven".