166664045 has 8 divisors (see below), whose sum is σ = 200116224. Its totient is φ = 133251664.

The previous prime is 166664033. The next prime is 166664053. The reversal of 166664045 is 540466661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166664045 - 2¹⁸ = 166401901 is a prime.

It is a Duffinian number.

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, 212 + ... + 18258.

It is an arithmetic number, because the mean of its divisors is an integer number (25014528).

Almost surely, 2^166664045 is an apocalyptic number.

It is an amenable number.

166664045 is a deficient number, since it is larger than the sum of its proper divisors (33452179).

166664045 is a wasteful number, since it uses less digits than its factorization.

166664045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19899.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 166664045 is about 12909.8429502454. The cubic root of 166664045 is about 550.3183226164.

The spelling of 166664045 in words is "one hundred sixty-six million, six hundred sixty-four thousand, forty-five".