861244475 has 24 divisors (see below), whose sum is σ = 1314395040. Its totient is φ = 545137920.

The previous prime is 861244459. The next prime is 861244477. The reversal of 861244475 is 574442168.

It is not a de Polignac number, because 861244475 - 2⁴ = 861244459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861244477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187010 + ... + 191559.

It is an arithmetic number, because the mean of its divisors is an integer number (54766460).

Almost surely, 2^861244475 is an apocalyptic number.

861244475 is a deficient number, since it is larger than the sum of its proper divisors (453150565).

861244475 is a wasteful number, since it uses less digits than its factorization.

861244475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378599 (or 378594 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 861244475 is about 29346.9670494244. The cubic root of 861244475 is about 951.4270243245.

The spelling of 861244475 in words is "eight hundred sixty-one million, two hundred forty-four thousand, four hundred seventy-five".