166685074 has 16 divisors (see below), whose sum is σ = 259680600. Its totient is φ = 80175744.

The previous prime is 166685059. The next prime is 166685137. The reversal of 166685074 is 470586661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 154132225 + 12552849 = 12415^2 + 3543^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166685074.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6069 + ... + 19240.

Almost surely, 2^166685074 is an apocalyptic number.

166685074 is a deficient number, since it is larger than the sum of its proper divisors (92995526).

166685074 is a wasteful number, since it uses less digits than its factorization.

166685074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25437.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 166685074 is about 12910.6573806294. The cubic root of 166685074 is about 550.3414672951.

The spelling of 166685074 in words is "one hundred sixty-six million, six hundred eighty-five thousand, seventy-four".