861203668 has 24 divisors (see below), whose sum is σ = 1627496192. Its totient is φ = 396386784.

The previous prime is 861203657. The next prime is 861203677. The reversal of 861203668 is 866302168.

It is a self number, because there is not a number n which added to its sum of digits gives 861203668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3480 + ... + 41647.

Almost surely, 2^861203668 is an apocalyptic number.

It is an amenable number.

861203668 is a deficient number, since it is larger than the sum of its proper divisors (766292524).

861203668 is a wasteful number, since it uses less digits than its factorization.

861203668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45511 (or 45509 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 861203668 is about 29346.2717904677. The cubic root of 861203668 is about 951.4119974276.

The spelling of 861203668 in words is "eight hundred sixty-one million, two hundred three thousand, six hundred sixty-eight".