166407650 has 12 divisors (see below), whose sum is σ = 309518322. Its totient is φ = 66563040.

The previous prime is 166407623. The next prime is 166407697. The reversal of 166407650 is 56704661.

It can be written as a sum of positive squares in 3 ways, for example, as 133425601 + 32982049 = 11551^2 + 5743^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166407650.

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, 1664027 + ... + 1664126.

Almost surely, 2^166407650 is an apocalyptic number.

166407650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166407650 is a deficient number, since it is larger than the sum of its proper divisors (143110672).

166407650 is a wasteful number, since it uses less digits than its factorization.

166407650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328165 (or 3328160 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 166407650 is about 12899.9089144071. The cubic root of 166407650 is about 550.0359756082.

The spelling of 166407650 in words is "one hundred sixty-six million, four hundred seven thousand, six hundred fifty".