861206888 has 16 divisors (see below), whose sum is σ = 1625602500. Its totient is φ = 427712896.

The previous prime is 861206873. The next prime is 861206891. The reversal of 861206888 is 888602168.

It can be written as a sum of positive squares in 2 ways, for example, as 857435524 + 3771364 = 29282^2 + 1942^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360053 + ... + 362436.

Almost surely, 2^861206888 is an apocalyptic number.

It is an amenable number.

861206888 is a deficient number, since it is larger than the sum of its proper divisors (764395612).

861206888 is a wasteful number, since it uses less digits than its factorization.

861206888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722644 (or 722640 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 861206888 is about 29346.3266525812. The cubic root of 861206888 is about 951.4131831877.

The spelling of 861206888 in words is "eight hundred sixty-one million, two hundred six thousand, eight hundred eighty-eight".