166416774 has 16 divisors (see below), whose sum is σ = 352412208. Its totient is φ = 52209152.

The previous prime is 166416769. The next prime is 166416781. The reversal of 166416774 is 477614661.

166416774 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815667 + ... + 815870.

It is an arithmetic number, because the mean of its divisors is an integer number (22025763).

Almost surely, 2^166416774 is an apocalyptic number.

166416774 is an abundant number, since it is smaller than the sum of its proper divisors (185995434).

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

166416774 is a wasteful number, since it uses less digits than its factorization.

166416774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631559.

The product of its digits is 169344, while the sum is 42.

The square root of 166416774 is about 12900.2625554676. The cubic root of 166416774 is about 550.0460281038.

The spelling of 166416774 in words is "one hundred sixty-six million, four hundred sixteen thousand, seven hundred seventy-four".