861248684 has 6 divisors (see below), whose sum is σ = 1507185204. Its totient is φ = 430624340.

The previous prime is 861248683. The next prime is 861248693. The reversal of 861248684 is 486842168.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (861248683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107656082 + ... + 107656089.

It is an arithmetic number, because the mean of its divisors is an integer number (251197534).

Almost surely, 2^861248684 is an apocalyptic number.

It is an amenable number.

861248684 is a deficient number, since it is larger than the sum of its proper divisors (645936520).

861248684 is a wasteful number, since it uses less digits than its factorization.

861248684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215312175 (or 215312173 counting only the distinct ones).

The product of its digits is 589824, while the sum is 47.

The square root of 861248684 is about 29347.0387603247. The cubic root of 861248684 is about 951.4285742327.

The spelling of 861248684 in words is "eight hundred sixty-one million, two hundred forty-eight thousand, six hundred eighty-four".