166706684 has 12 divisors (see below), whose sum is σ = 307091400. Its totient is φ = 78966288.

The previous prime is 166706681. The next prime is 166706693. The reversal of 166706684 is 486607661.

It is a super-2 number, since 2×166706684² = 55582236980551712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166706681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096679 + ... + 1096830.

It is an arithmetic number, because the mean of its divisors is an integer number (25590950).

Almost surely, 2^166706684 is an apocalyptic number.

It is an amenable number.

166706684 is a deficient number, since it is larger than the sum of its proper divisors (140384716).

166706684 is a wasteful number, since it uses less digits than its factorization.

166706684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193532 (or 2193530 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 166706684 is about 12911.4942589926. The cubic root of 166706684 is about 550.3652493989.

The spelling of 166706684 in words is "one hundred sixty-six million, seven hundred six thousand, six hundred eighty-four".