166661066 has 16 divisors (see below), whose sum is σ = 293696928. Its totient is φ = 69927600.

The previous prime is 166661039. The next prime is 166661123. The reversal of 166661066 is 660166661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291080 + ... + 291651.

It is an arithmetic number, because the mean of its divisors is an integer number (18356058).

Almost surely, 2^166661066 is an apocalyptic number.

166661066 is a deficient number, since it is larger than the sum of its proper divisors (127035862).

166661066 is a wasteful number, since it uses less digits than its factorization.

166661066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582757.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 166661066 is about 12909.7275726485. The cubic root of 166661066 is about 550.3150437488.

The spelling of 166661066 in words is "one hundred sixty-six million, six hundred sixty-one thousand, sixty-six".