166884645 has 8 divisors (see below), whose sum is σ = 267015456. Its totient is φ = 89005136.

The previous prime is 166884607. The next prime is 166884649. The reversal of 166884645 is 546488661.

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 166884645 - 2²⁷ = 32666917 is a prime.

It is a super-4 number, since 4×166884645⁴ (a number of 34 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166884594 and 166884603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166884649) 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, 5562807 + ... + 5562836.

It is an arithmetic number, because the mean of its divisors is an integer number (33376932).

Almost surely, 2^166884645 is an apocalyptic number.

166884645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166884645 is a deficient number, since it is larger than the sum of its proper divisors (100130811).

166884645 is a wasteful number, since it uses less digits than its factorization.

166884645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11125651.

The product of its digits is 1105920, while the sum is 48.

The square root of 166884645 is about 12918.3839933639. The cubic root of 166884645 is about 550.5610198315.

The spelling of 166884645 in words is "one hundred sixty-six million, eight hundred eighty-four thousand, six hundred forty-five".