166660330 has 8 divisors (see below), whose sum is σ = 299988612. Its totient is φ = 66664128.

The previous prime is 166660327. The next prime is 166660339. The reversal of 166660330 is 33066661.

It can be written as a sum of positive squares in 2 ways, for example, as 165353881 + 1306449 = 12859^2 + 1143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 166660292 and 166660301.

It is not an unprimeable number, because it can be changed into a prime (166660339) 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, 8333007 + ... + 8333026.

Almost surely, 2^166660330 is an apocalyptic number.

166660330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166660330 is a deficient number, since it is larger than the sum of its proper divisors (133328282).

166660330 is a wasteful number, since it uses less digits than its factorization.

166660330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666040.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 166660330 is about 12909.6990669806. The cubic root of 166660330 is about 550.3142336566.

The spelling of 166660330 in words is "one hundred sixty-six million, six hundred sixty thousand, three hundred thirty".