816263 has 8 divisors (see below), whose sum is σ = 965280. Its totient is φ = 675360.

The previous prime is 816251. The next prime is 816271. The reversal of 816263 is 362618.

816263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 816263 - 2¹² = 812167 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

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 816263.

It is not an unprimeable number, because it can be changed into a prime (816203) 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, 1808 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (120660).

2⁸¹⁶²⁶³ is an apocalyptic number.

816263 is a deficient number, since it is larger than the sum of its proper divisors (149017).

816263 is a wasteful number, since it uses less digits than its factorization.

816263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057.

The product of its digits is 1728, while the sum is 26.

The square root of 816263 is about 903.4727444699. The cubic root of 816263 is about 93.4566128879.

The spelling of 816263 in words is "eight hundred sixteen thousand, two hundred sixty-three".