166812474 has 16 divisors (see below), whose sum is σ = 335123712. Its totient is φ = 55354368.

The previous prime is 166812473. The next prime is 166812493. The reversal of 166812474 is 474218661.

It is not an unprimeable number, because it can be changed into a prime (166812473) 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, 60999 + ... + 63674.

It is an arithmetic number, because the mean of its divisors is an integer number (20945232).

Almost surely, 2^166812474 is an apocalyptic number.

166812474 is an abundant number, since it is smaller than the sum of its proper divisors (168311238).

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

166812474 is a wasteful number, since it uses less digits than its factorization.

166812474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124901.

The product of its digits is 64512, while the sum is 39.

The square root of 166812474 is about 12915.5903465540. The cubic root of 166812474 is about 550.4816431087.

The spelling of 166812474 in words is "one hundred sixty-six million, eight hundred twelve thousand, four hundred seventy-four".