166009297 has 8 divisors (see below), whose sum is σ = 168181920. Its totient is φ = 163843680.

The previous prime is 166009279. The next prime is 166009307. The reversal of 166009297 is 792900661.

166009297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166009297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166009997) 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, 59422 + ... + 62152.

It is an arithmetic number, because the mean of its divisors is an integer number (21022740).

Almost surely, 2^166009297 is an apocalyptic number.

It is an amenable number.

166009297 is a deficient number, since it is larger than the sum of its proper divisors (2172623).

166009297 is an equidigital number, since it uses as much as digits as its factorization.

166009297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 166009297 is about 12884.4595152455. The cubic root of 166009297 is about 549.5967258689.

The spelling of 166009297 in words is "one hundred sixty-six million, nine thousand, two hundred ninety-seven".