816344648 has 16 divisors (see below), whose sum is σ = 1749310080. Its totient is φ = 349861968.

The previous prime is 816344611. The next prime is 816344663. The reversal of 816344648 is 846443618.

It is a junction number, because it is equal to n+sod(n) for n = 816344599 and 816344608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7288736 + ... + 7288847.

It is an arithmetic number, because the mean of its divisors is an integer number (109331880).

Almost surely, 2^816344648 is an apocalyptic number.

It is an amenable number.

816344648 is an abundant number, since it is smaller than the sum of its proper divisors (932965432).

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

816344648 is a wasteful number, since it uses less digits than its factorization.

816344648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14577596 (or 14577592 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The square root of 816344648 is about 28571.7456239551. The cubic root of 816344648 is about 934.5972883257.

The spelling of 816344648 in words is "eight hundred sixteen million, three hundred forty-four thousand, six hundred forty-eight".