166213077 has 16 divisors (see below), whose sum is σ = 224974080. Its totient is φ = 109137600.

The previous prime is 166213049. The next prime is 166213081. The reversal of 166213077 is 770312661.

It is not a de Polignac number, because 166213077 - 2¹¹ = 166211029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166213027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156127 + ... + 157187.

It is an arithmetic number, because the mean of its divisors is an integer number (14060880).

Almost surely, 2^166213077 is an apocalyptic number.

It is an amenable number.

166213077 is a deficient number, since it is larger than the sum of its proper divisors (58761003).

166213077 is a wasteful number, since it uses less digits than its factorization.

166213077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 166213077 is about 12892.3650661932. The cubic root of 166213077 is about 549.8215145361.

The spelling of 166213077 in words is "one hundred sixty-six million, two hundred thirteen thousand, seventy-seven".