861496472 has 16 divisors (see below), whose sum is σ = 1623426000. Its totient is φ = 428582880.

The previous prime is 861496457. The next prime is 861496477. The reversal of 861496472 is 274694168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861496477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268979 + ... + 272162.

It is an arithmetic number, because the mean of its divisors is an integer number (101464125).

Almost surely, 2^861496472 is an apocalyptic number.

It is an amenable number.

861496472 is a deficient number, since it is larger than the sum of its proper divisors (761929528).

861496472 is a wasteful number, since it uses less digits than its factorization.

861496472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541346 (or 541342 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 861496472 is about 29351.2601433056. The cubic root of 861496472 is about 951.5198099708.

The spelling of 861496472 in words is "eight hundred sixty-one million, four hundred ninety-six thousand, four hundred seventy-two".