816630 has 32 divisors (see below), whose sum is σ = 1983744. Its totient is φ = 215136.

The previous prime is 816593. The next prime is 816649. The reversal of 816630 is 36618.

It is a self number, because there is not a number n which added to its sum of digits gives 816630.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 816630.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4807 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (61992).

2⁸¹⁶⁶³⁰ is an apocalyptic number.

816630 is an abundant number, since it is smaller than the sum of its proper divisors (1167114).

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

816630 is a wasteful number, since it uses less digits than its factorization.

816630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 816630 is about 903.6758268317. The cubic root of 816630 is about 93.4706171315.

The spelling of 816630 in words is "eight hundred sixteen thousand, six hundred thirty".