166650066 has 48 divisors (see below), whose sum is σ = 407496960. Its totient is φ = 48756960.

The previous prime is 166650061. The next prime is 166650089. The reversal of 166650066 is 660056661.

It is a self number, because there is not a number n which added to its sum of digits gives 166650066.

It is not an unprimeable number, because it can be changed into a prime (166650061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8770 + ... + 20253.

It is an arithmetic number, because the mean of its divisors is an integer number (8489520).

Almost surely, 2^166650066 is an apocalyptic number.

166650066 is an abundant number, since it is smaller than the sum of its proper divisors (240846894).

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

166650066 is a wasteful number, since it uses less digits than its factorization.

166650066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29071 (or 29068 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 166650066 is about 12909.3015302920. The cubic root of 166650066 is about 550.3029361446.

The spelling of 166650066 in words is "one hundred sixty-six million, six hundred fifty thousand, sixty-six".