861479622 has 24 divisors (see below), whose sum is σ = 1867592376. Its totient is φ = 286997856.

The previous prime is 861479611. The next prime is 861479639. The reversal of 861479622 is 226974168.

It is a happy number.

861479622 is a `hidden beast` number, since 8 + 6 + 14 + 7 + 9 + 622 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21778 + ... + 46874.

It is an arithmetic number, because the mean of its divisors is an integer number (77816349).

Almost surely, 2^861479622 is an apocalyptic number.

861479622 is an abundant number, since it is smaller than the sum of its proper divisors (1006112754).

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

861479622 is a wasteful number, since it uses less digits than its factorization.

861479622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27012 (or 27009 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 861479622 is about 29350.9731014152. The cubic root of 861479622 is about 951.5136063418.

The spelling of 861479622 in words is "eight hundred sixty-one million, four hundred seventy-nine thousand, six hundred twenty-two".