166493806 has 8 divisors (see below), whose sum is σ = 249852744. Its totient is φ = 83209560.

The previous prime is 166493791. The next prime is 166493851. The reversal of 166493806 is 608394661.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12720 + ... + 22243.

It is an arithmetic number, because the mean of its divisors is an integer number (31231593).

Almost surely, 2^166493806 is an apocalyptic number.

166493806 is a deficient number, since it is larger than the sum of its proper divisors (83358938).

166493806 is a wasteful number, since it uses less digits than its factorization.

166493806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37346.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 166493806 is about 12903.2478857069. The cubic root of 166493806 is about 550.1308845532.

The spelling of 166493806 in words is "one hundred sixty-six million, four hundred ninety-three thousand, eight hundred six".