166774073 has 4 divisors (see below), whose sum is σ = 167991540. Its totient is φ = 165556608.

The previous prime is 166774067. The next prime is 166774087. The reversal of 166774073 is 370477661.

166774073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370477661 = 883 ⋅419567.

It can be written as a sum of positive squares in 2 ways, for example, as 102981904 + 63792169 = 10148^2 + 7987^2 .

It is a cyclic number.

It is not a de Polignac number, because 166774073 - 2⁴ = 166774057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166774073.

It is not an unprimeable number, because it can be changed into a prime (166774043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608528 + ... + 608801.

It is an arithmetic number, because the mean of its divisors is an integer number (41997885).

Almost surely, 2^166774073 is an apocalyptic number.

It is an amenable number.

166774073 is a deficient number, since it is larger than the sum of its proper divisors (1217467).

166774073 is a wasteful number, since it uses less digits than its factorization.

166774073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217466.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 166774073 is about 12914.1036467887. The cubic root of 166774073 is about 550.4393987302.

The spelling of 166774073 in words is "one hundred sixty-six million, seven hundred seventy-four thousand, seventy-three".