166974 has 16 divisors (see below), whose sum is σ = 353808. Its totient is φ = 52352.

The previous prime is 166973. The next prime is 166979. The reversal of 166974 is 479661.

166974 = 12² + 13² + ... + 79².

It is a happy number.

166974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166973) 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, 717 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (22113).

2¹⁶⁶⁹⁷⁴ is an apocalyptic number.

166974 is an abundant number, since it is smaller than the sum of its proper divisors (186834).

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

166974 is a wasteful number, since it uses less digits than its factorization.

166974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659.

The product of its digits is 9072, while the sum is 33.

The square root of 166974 is about 408.6245220248. The cubic root of 166974 is about 55.0659264545.

The spelling of 166974 in words is "one hundred sixty-six thousand, nine hundred seventy-four".