166077899 has 8 divisors (see below), whose sum is σ = 179637360. Its totient is φ = 152630496.

The previous prime is 166077887. The next prime is 166077907. The reversal of 166077899 is 998770661.

It is a happy number.

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 166077899 - 2⁸ = 166077643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166077899.

It is not an unprimeable number, because it can be changed into a prime (166077869) 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, 24917 + ... + 30870.

It is an arithmetic number, because the mean of its divisors is an integer number (22454670).

Almost surely, 2^166077899 is an apocalyptic number.

166077899 is a deficient number, since it is larger than the sum of its proper divisors (13559461).

166077899 is a wasteful number, since it uses less digits than its factorization.

166077899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56029.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 166077899 is about 12887.1214396389. The cubic root of 166077899 is about 549.6724209111.

The spelling of 166077899 in words is "one hundred sixty-six million, seventy-seven thousand, eight hundred ninety-nine".