863998722 has 24 divisors (see below), whose sum is σ = 1874287740. Its totient is φ = 287647200.

The previous prime is 863998721. The next prime is 863998757. The reversal of 863998722 is 227899368.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 851530761 + 12467961 = 29181^2 + 3531^2 .

It is not an unprimeable number, because it can be changed into a prime (863998721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14029 + ... + 43872.

Almost surely, 2^863998722 is an apocalyptic number.

863998722 is an abundant number, since it is smaller than the sum of its proper divisors (1010289018).

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

863998722 is a wasteful number, since it uses less digits than its factorization.

863998722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58738 (or 58735 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 863998722 is about 29393.8551741686. The cubic root of 863998722 is about 952.4401615745.

The spelling of 863998722 in words is "eight hundred sixty-three million, nine hundred ninety-eight thousand, seven hundred twenty-two".