166816366 has 8 divisors (see below), whose sum is σ = 250295760. Its totient is φ = 83384448.

The previous prime is 166816277. The next prime is 166816367. The reversal of 166816366 is 663618661.

166816366 is digitally balanced in base 3, 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (166816367) 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, 1146 + ... + 18301.

It is an arithmetic number, because the mean of its divisors is an integer number (31286970).

Almost surely, 2^166816366 is an apocalyptic number.

166816366 is a deficient number, since it is larger than the sum of its proper divisors (83479394).

166816366 is a wasteful number, since it uses less digits than its factorization.

166816366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23738.

The product of its digits is 186624, while the sum is 43.

The square root of 166816366 is about 12915.7410162948. The cubic root of 166816366 is about 550.4859242791.

The spelling of 166816366 in words is "one hundred sixty-six million, eight hundred sixteen thousand, three hundred sixty-six".