166807085 has 4 divisors (see below), whose sum is σ = 200168508. Its totient is φ = 133445664.

The previous prime is 166807079. The next prime is 166807087. The reversal of 166807085 is 580708661.

166807085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71588521 + 95218564 = 8461^2 + 9758^2 .

It is a cyclic number.

It is not a de Polignac number, because 166807085 - 2⁶ = 166807021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166807087) 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, 16680704 + ... + 16680713.

It is an arithmetic number, because the mean of its divisors is an integer number (50042127).

Almost surely, 2^166807085 is an apocalyptic number.

It is an amenable number.

166807085 is a deficient number, since it is larger than the sum of its proper divisors (33361423).

166807085 is an equidigital number, since it uses as much as digits as its factorization.

166807085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33361422.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 166807085 is about 12915.3817210333. The cubic root of 166807085 is about 550.4757151397.

The spelling of 166807085 in words is "one hundred sixty-six million, eight hundred seven thousand, eighty-five".