166857474 has 32 divisors (see below), whose sum is σ = 394542720. Its totient is φ = 46029312.

The previous prime is 166857443. The next prime is 166857491. The reversal of 166857474 is 474758661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67279 + ... + 69714.

It is an arithmetic number, because the mean of its divisors is an integer number (12329460).

Almost surely, 2^166857474 is an apocalyptic number.

166857474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166857474 is an abundant number, since it is smaller than the sum of its proper divisors (227685246).

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

166857474 is a wasteful number, since it uses less digits than its factorization.

166857474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137034.

The product of its digits is 1128960, while the sum is 48.

The square root of 166857474 is about 12917.3323097302. The cubic root of 166857474 is about 550.5311387013.

It can be divided in two parts, 166857 and 474, that added together give a triangular number (167331 = T₅₇₈).

The spelling of 166857474 in words is "one hundred sixty-six million, eight hundred fifty-seven thousand, four hundred seventy-four".