861913716 has 12 divisors (see below), whose sum is σ = 2011132032. Its totient is φ = 287304568.

The previous prime is 861913697. The next prime is 861913733. The reversal of 861913716 is 617319168.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 35913060 + ... + 35913083.

It is an arithmetic number, because the mean of its divisors is an integer number (167594336).

Almost surely, 2^861913716 is an apocalyptic number.

It is an amenable number.

861913716 is an abundant number, since it is smaller than the sum of its proper divisors (1149218316).

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

861913716 is a wasteful number, since it uses less digits than its factorization.

861913716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71826150 (or 71826148 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 861913716 is about 29358.3670526819. The cubic root of 861913716 is about 951.6734000189.

The spelling of 861913716 in words is "eight hundred sixty-one million, nine hundred thirteen thousand, seven hundred sixteen".