816495 has 16 divisors (see below), whose sum is σ = 1352160. Its totient is φ = 420224.

The previous prime is 816469. The next prime is 816499. The reversal of 816495 is 594618.

It is a cyclic number.

It is not a de Polignac number, because 816495 - 2⁷ = 816367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816499) by changing a digit.

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, 504 + ... + 1373.

It is an arithmetic number, because the mean of its divisors is an integer number (84510).

2⁸¹⁶⁴⁹⁵ is an apocalyptic number.

816495 is a deficient number, since it is larger than the sum of its proper divisors (535665).

816495 is a wasteful number, since it uses less digits than its factorization.

816495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914.

The product of its digits is 8640, while the sum is 33.

The square root of 816495 is about 903.6011288174. The cubic root of 816495 is about 93.4654661947.

The spelling of 816495 in words is "eight hundred sixteen thousand, four hundred ninety-five".