861550968 has 32 divisors (see below), whose sum is σ = 2154632400. Its totient is φ = 287083008.

The previous prime is 861550961. The next prime is 861550969. The reversal of 861550968 is 869055168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861550961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100848 + ... + 109056.

Almost surely, 2^861550968 is an apocalyptic number.

It is an amenable number.

861550968 is an abundant number, since it is smaller than the sum of its proper divisors (1293081432).

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

861550968 is a wasteful number, since it uses less digits than its factorization.

861550968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12591 (or 12587 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 861550968 is about 29352.1884703679. The cubic root of 861550968 is about 951.5398730942.

The spelling of 861550968 in words is "eight hundred sixty-one million, five hundred fifty thousand, nine hundred sixty-eight".