863522768 has 10 divisors (see below), whose sum is σ = 1673075394. Its totient is φ = 431761376.

The previous prime is 863522749. The next prime is 863522791. The reversal of 863522768 is 867225368.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 439657024 + 423865744 = 20968^2 + 20588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26985071 + ... + 26985102.

Almost surely, 2^863522768 is an apocalyptic number.

It is an amenable number.

863522768 is a deficient number, since it is larger than the sum of its proper divisors (809552626).

863522768 is a wasteful number, since it uses less digits than its factorization.

863522768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53970181 (or 53970175 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 863522768 is about 29385.7579109337. The cubic root of 863522768 is about 952.2652381019.

The spelling of 863522768 in words is "eight hundred sixty-three million, five hundred twenty-two thousand, seven hundred sixty-eight".