166661514 has 24 divisors (see below), whose sum is σ = 364679172. Its totient is φ = 55003200.

The previous prime is 166661501. The next prime is 166661533. The reversal of 166661514 is 415166661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 157929489 + 8732025 = 12567^2 + 2955^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44019 + ... + 47654.

Almost surely, 2^166661514 is an apocalyptic number.

166661514 is an abundant number, since it is smaller than the sum of its proper divisors (198017658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166661514 is a wasteful number, since it uses less digits than its factorization.

166661514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91782 (or 91779 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 166661514 is about 12909.7449238937. The cubic root of 166661514 is about 550.3155368472.

The spelling of 166661514 in words is "one hundred sixty-six million, six hundred sixty-one thousand, five hundred fourteen".