966690181 has 4 divisors (see below), whose sum is σ = 989171392. Its totient is φ = 944208972.

The previous prime is 966690167. The next prime is 966690187. The reversal of 966690181 is 181096669.

966690181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 181096669 = 13 ⋅13930513.

It is a cyclic number.

It is not a de Polignac number, because 966690181 - 2¹¹ = 966688133 is a prime.

It is a super-2 number, since 2×966690181² = 1868979812083625522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966690187) 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, 11240541 + ... + 11240626.

It is an arithmetic number, because the mean of its divisors is an integer number (247292848).

Almost surely, 2^966690181 is an apocalyptic number.

It is an amenable number.

966690181 is a deficient number, since it is larger than the sum of its proper divisors (22481211).

966690181 is a wasteful number, since it uses less digits than its factorization.

966690181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22481210.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 966690181 is about 31091.6416581692. The cubic root of 966690181 is about 988.7711109942.

The spelling of 966690181 in words is "nine hundred sixty-six million, six hundred ninety thousand, one hundred eighty-one".