166660190 has 8 divisors (see below), whose sum is σ = 299988360. Its totient is φ = 66664072.

The previous prime is 166660189. The next prime is 166660199. The reversal of 166660190 is 91066661.

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

It is a super-2 number, since 2×166660190² = 55551237861672200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166660190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166660199) 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, 8333000 + ... + 8333019.

It is an arithmetic number, because the mean of its divisors is an integer number (37498545).

Almost surely, 2^166660190 is an apocalyptic number.

166660190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166660190 is a deficient number, since it is larger than the sum of its proper divisors (133328170).

166660190 is a wasteful number, since it uses less digits than its factorization.

166660190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666026.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 166660190 is about 12909.6936446997. The cubic root of 166660190 is about 550.3140795627.

The spelling of 166660190 in words is "one hundred sixty-six million, six hundred sixty thousand, one hundred ninety".