166880287 has 8 divisors (see below), whose sum is σ = 200758400. Its totient is φ = 135511704.

The previous prime is 166880269. The next prime is 166880293. The reversal of 166880287 is 782088661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166880287 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 (166880237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627237 + ... + 627502.

It is an arithmetic number, because the mean of its divisors is an integer number (25094800).

Almost surely, 2^166880287 is an apocalyptic number.

166880287 is a deficient number, since it is larger than the sum of its proper divisors (33878113).

166880287 is a wasteful number, since it uses less digits than its factorization.

166880287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254765.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 166880287 is about 12918.2153179145. The cubic root of 166880287 is about 550.5562273678.

The spelling of 166880287 in words is "one hundred sixty-six million, eight hundred eighty thousand, two hundred eighty-seven".