861321484 has 24 divisors (see below), whose sum is σ = 1557698688. Its totient is φ = 416296320.

The previous prime is 861321451. The next prime is 861321499. The reversal of 861321484 is 484123168.

861321484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 122184 + ... + 129040.

It is an arithmetic number, because the mean of its divisors is an integer number (64904112).

Almost surely, 2^861321484 is an apocalyptic number.

It is an amenable number.

861321484 is a deficient number, since it is larger than the sum of its proper divisors (696377204).

861321484 is a wasteful number, since it uses less digits than its factorization.

861321484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905 (or 7903 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 861321484 is about 29348.2790636862. The cubic root of 861321484 is about 951.4553810657.

It can be divided in two parts, 86132 and 1484, that added together give a square (87616 = 296²).

The spelling of 861321484 in words is "eight hundred sixty-one million, three hundred twenty-one thousand, four hundred eighty-four".