816648682 has 16 divisors (see below), whose sum is σ = 1259456040. Its totient is φ = 396854208.

The previous prime is 816648673. The next prime is 816648683. The reversal of 816648682 is 286846618.

It can be written as a sum of positive squares in 4 ways, for example, as 784056001 + 32592681 = 28001^2 + 5709^2 .

It is not an unprimeable number, because it can be changed into a prime (816648683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68244 + ... + 79312.

Almost surely, 2^816648682 is an apocalyptic number.

816648682 is a deficient number, since it is larger than the sum of its proper divisors (442807358).

816648682 is a wasteful number, since it uses less digits than its factorization.

816648682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12105.

The product of its digits is 884736, while the sum is 49.

The square root of 816648682 is about 28577.0656646199. The cubic root of 816648682 is about 934.7132990019.

The spelling of 816648682 in words is "eight hundred sixteen million, six hundred forty-eight thousand, six hundred eighty-two".