166047774 has 16 divisors (see below), whose sum is σ = 334134912. Its totient is φ = 55009368.

The previous prime is 166047773. The next prime is 166047779. The reversal of 166047774 is 477740661.

166047774 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 (166047773) 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, 83914 + ... + 85869.

It is an arithmetic number, because the mean of its divisors is an integer number (20883432).

Almost surely, 2^166047774 is an apocalyptic number.

166047774 is an abundant number, since it is smaller than the sum of its proper divisors (168087138).

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

166047774 is a wasteful number, since it uses less digits than its factorization.

166047774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169951.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 166047774 is about 12885.9525841127. The cubic root of 166047774 is about 549.6391837313.

The spelling of 166047774 in words is "one hundred sixty-six million, forty-seven thousand, seven hundred seventy-four".