166500650 has 12 divisors (see below), whose sum is σ = 309691302. Its totient is φ = 66600240.

The previous prime is 166500647. The next prime is 166500671. The reversal of 166500650 is 56005661.

166500650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 129982801 + 36517849 = 11401^2 + 6043^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1664957 + ... + 1665056.

Almost surely, 2^166500650 is an apocalyptic number.

166500650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166500650 is a deficient number, since it is larger than the sum of its proper divisors (143190652).

166500650 is a wasteful number, since it uses less digits than its factorization.

166500650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330025 (or 3330020 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 166500650 is about 12903.5130875278. The cubic root of 166500650 is about 550.1384224596.

The spelling of 166500650 in words is "one hundred sixty-six million, five hundred thousand, six hundred fifty".