166661796 has 24 divisors (see below), whose sum is σ = 444431680. Its totient is φ = 47617632.

The previous prime is 166661773. The next prime is 166661819. The reversal of 166661796 is 697166661.

It is an interprime number because it is at equal distance from previous prime (166661773) and next prime (166661819).

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, 991951 + ... + 992118.

Almost surely, 2^166661796 is an apocalyptic number.

It is an amenable number.

166661796 is an abundant number, since it is smaller than the sum of its proper divisors (277769884).

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

166661796 is a wasteful number, since it uses less digits than its factorization.

166661796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984083 (or 1984081 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 166661796 is about 12909.7558458710. The cubic root of 166661796 is about 550.3158472346.

The spelling of 166661796 in words is "one hundred sixty-six million, six hundred sixty-one thousand, seven hundred ninety-six".