166474 has 32 divisors (see below), whose sum is σ = 331776. Its totient is φ = 60720.

The previous prime is 166471. The next prime is 166487. The reversal of 166474 is 474661.

It is not an unprimeable number, because it can be changed into a prime (166471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3519 + ... + 3565.

It is an arithmetic number, because the mean of its divisors is an integer number (10368).

2¹⁶⁶⁴⁷⁴ is an apocalyptic number.

166474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166474 is a deficient number, since it is larger than the sum of its proper divisors (165302).

166474 is a wasteful number, since it uses less digits than its factorization.

166474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90.

The product of its digits is 4032, while the sum is 28.

The square root of 166474 is about 408.0122547179. The cubic root of 166474 is about 55.0109069278.

The spelling of 166474 in words is "one hundred sixty-six thousand, four hundred seventy-four".