166466405 has 8 divisors (see below), whose sum is σ = 228296832. Its totient is φ = 114148368.

The previous prime is 166466381. The next prime is 166466407. The reversal of 166466405 is 504664661.

166466405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166466405 is a prime.

It is a super-2 number, since 2×166466405² = 55422127987248050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166466407) 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, 2378057 + ... + 2378126.

It is an arithmetic number, because the mean of its divisors is an integer number (28537104).

Almost surely, 2^166466405 is an apocalyptic number.

It is an amenable number.

166466405 is a deficient number, since it is larger than the sum of its proper divisors (61830427).

166466405 is an equidigital number, since it uses as much as digits as its factorization.

166466405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756195.

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

The square root of 166466405 is about 12902.1860550838. The cubic root of 166466405 is about 550.1007033235.

The spelling of 166466405 in words is "one hundred sixty-six million, four hundred sixty-six thousand, four hundred five".