166574287 has 12 divisors (see below), whose sum is σ = 186205320. Its totient is φ = 148858160.

The previous prime is 166574281. The next prime is 166574297. The reversal of 166574287 is 782475661.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-166574287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166574281) 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, 4528 + ... + 18805.

It is an arithmetic number, because the mean of its divisors is an integer number (15517110).

Almost surely, 2^166574287 is an apocalyptic number.

166574287 is a deficient number, since it is larger than the sum of its proper divisors (19631033).

166574287 is a wasteful number, since it uses less digits than its factorization.

166574287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23414 (or 23403 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 166574287 is about 12906.3661423346. The cubic root of 166574287 is about 550.2195123780.

The spelling of 166574287 in words is "one hundred sixty-six million, five hundred seventy-four thousand, two hundred eighty-seven".