166336645 has 16 divisors (see below), whose sum is σ = 206184960. Its totient is φ = 128723904.

The previous prime is 166336613. The next prime is 166336649. The reversal of 166336645 is 546633661.

It is a cyclic number.

It is not a de Polignac number, because 166336645 - 2⁵ = 166336613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166336598 and 166336607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166336649) 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, 30604 + ... + 35626.

It is an arithmetic number, because the mean of its divisors is an integer number (12886560).

Almost surely, 2^166336645 is an apocalyptic number.

It is an amenable number.

166336645 is a deficient number, since it is larger than the sum of its proper divisors (39848315).

166336645 is a wasteful number, since it uses less digits than its factorization.

166336645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244.

The product of its digits is 233280, while the sum is 40.

The square root of 166336645 is about 12897.1564695479. The cubic root of 166336645 is about 549.9577322890.

The spelling of 166336645 in words is "one hundred sixty-six million, three hundred thirty-six thousand, six hundred forty-five".