861748876 has 18 divisors (see below), whose sum is σ = 1591612260. Its totient is φ = 408196152.

The previous prime is 861748871. The next prime is 861748879. The reversal of 861748876 is 678847168.

It is a happy number.

It is a super-2 number, since 2×861748876² = 1485222250574526752, which contains 22 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (861748871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 296946 + ... + 299833.

Almost surely, 2^861748876 is an apocalyptic number.

It is an amenable number.

861748876 is a deficient number, since it is larger than the sum of its proper divisors (729863384).

861748876 is a wasteful number, since it uses less digits than its factorization.

861748876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596821 (or 596800 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 55.

The square root of 861748876 is about 29355.5595415928. The cubic root of 861748876 is about 951.6127273391.

The spelling of 861748876 in words is "eight hundred sixty-one million, seven hundred forty-eight thousand, eight hundred seventy-six".