166069361 has 4 divisors (see below), whose sum is σ = 173289792. Its totient is φ = 158848932.

The previous prime is 166069339. The next prime is 166069363. The reversal of 166069361 is 163960661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166069361 - 2¹⁰ = 166068337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166069363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3610181 + ... + 3610226.

It is an arithmetic number, because the mean of its divisors is an integer number (43322448).

Almost surely, 2^166069361 is an apocalyptic number.

It is an amenable number.

166069361 is a deficient number, since it is larger than the sum of its proper divisors (7220431).

166069361 is an equidigital number, since it uses as much as digits as its factorization.

166069361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220430.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 166069361 is about 12886.7901744383. The cubic root of 166069361 is about 549.6630012681.

The spelling of 166069361 in words is "one hundred sixty-six million, sixty-nine thousand, three hundred sixty-one".