166477455 has 12 divisors (see below), whose sum is σ = 288561000. Its totient is φ = 88787952.

The previous prime is 166477417. The next prime is 166477469. The reversal of 166477455 is 554774661.

It is not a de Polignac number, because 166477455 - 2⁷ = 166477327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3699499 = 166477455 / (1 + 6 + 6 + 4 + 7 + 7 + 4 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 166477455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1849705 + ... + 1849794.

It is an arithmetic number, because the mean of its divisors is an integer number (24046750).

Almost surely, 2^166477455 is an apocalyptic number.

166477455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166477455 is a deficient number, since it is larger than the sum of its proper divisors (122083545).

166477455 is a wasteful number, since it uses less digits than its factorization.

166477455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699510 (or 3699507 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 166477455 is about 12902.6142699842. The cubic root of 166477455 is about 550.1128749051.

The spelling of 166477455 in words is "one hundred sixty-six million, four hundred seventy-seven thousand, four hundred fifty-five".