166791996 has 36 divisors (see below), whose sum is σ = 481844272. Its totient is φ = 47654784.

The previous prime is 166791991. The next prime is 166792001. The reversal of 166791996 is 699197661.

166791996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166791991) and next prime (166792001).

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166791991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330685 + ... + 331188.

Almost surely, 2^166791996 is an apocalyptic number.

It is an amenable number.

166791996 is an abundant number, since it is smaller than the sum of its proper divisors (315052276).

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

166791996 is a wasteful number, since it uses less digits than its factorization.

166791996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661890 (or 661885 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 166791996 is about 12914.7975593890. The cubic root of 166791996 is about 550.4591163673.

The spelling of 166791996 in words is "one hundred sixty-six million, seven hundred ninety-one thousand, nine hundred ninety-six".