166315772 has 12 divisors (see below), whose sum is σ = 332631600. Its totient is φ = 71278176.

The previous prime is 166315763. The next prime is 166315781. The reversal of 166315772 is 277513661.

166315772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166315763) and next prime (166315781).

166315772 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2969897 + ... + 2969952.

It is an arithmetic number, because the mean of its divisors is an integer number (27719300).

Almost surely, 2^166315772 is an apocalyptic number.

It is an amenable number.

166315772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166315772 is a wasteful number, since it uses less digits than its factorization.

166315772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939860 (or 5939858 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 166315772 is about 12896.3472347793. The cubic root of 166315772 is about 549.9347272401.

The spelling of 166315772 in words is "one hundred sixty-six million, three hundred fifteen thousand, seven hundred seventy-two".