886661661 has 12 divisors (see below), whose sum is σ = 1235853248. Its totient is φ = 565406424.

The previous prime is 886661653. The next prime is 886661669. The reversal of 886661661 is 166166688.

It is a happy number.

886661661 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 (886661653) and next prime (886661669).

It is not a de Polignac number, because 886661661 - 2³ = 886661653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 886661661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (886661669) 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, 277765 + ... + 280938.

Almost surely, 2^886661661 is an apocalyptic number.

It is an amenable number.

886661661 is a deficient number, since it is larger than the sum of its proper divisors (349191587).

886661661 is a wasteful number, since it uses less digits than its factorization.

886661661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558752 (or 558729 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 886661661 is about 29776.8645260041. The cubic root of 886661661 is about 960.6959872670.

The spelling of 886661661 in words is "eight hundred eighty-six million, six hundred sixty-one thousand, six hundred sixty-one".