816709630 has 16 divisors (see below), whose sum is σ = 1603720944. Its totient is φ = 296985280.

The previous prime is 816709609. The next prime is 816709633. The reversal of 816709630 is 36907618.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816709633) 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, 3712207 + ... + 3712426.

It is an arithmetic number, because the mean of its divisors is an integer number (100232559).

Almost surely, 2^816709630 is an apocalyptic number.

816709630 is a deficient number, since it is larger than the sum of its proper divisors (787011314).

816709630 is a wasteful number, since it uses less digits than its factorization.

816709630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7424651.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 816709630 is about 28578.1320243294. The cubic root of 816709630 is about 934.7365515502.

The spelling of 816709630 in words is "eight hundred sixteen million, seven hundred nine thousand, six hundred thirty".