816093 has 6 divisors (see below), whose sum is σ = 1178814. Its totient is φ = 544056.

The previous prime is 816091. The next prime is 816103. The reversal of 816093 is 390618.

It can be written as a sum of positive squares in only one way, i.e., 459684 + 356409 = 678^2 + 597^2 .

It is not a de Polignac number, because 816093 - 2¹ = 816091 is a prime.

816093 is a lucky number.

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 816093.

It is not an unprimeable number, because it can be changed into a prime (816091) 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 5 ways as a sum of consecutive naturals, for example, 45330 + ... + 45347.

It is an arithmetic number, because the mean of its divisors is an integer number (196469).

2⁸¹⁶⁰⁹³ is an apocalyptic number.

It is an amenable number.

816093 is a deficient number, since it is larger than the sum of its proper divisors (362721).

816093 is a wasteful number, since it uses less digits than its factorization.

816093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90683 (or 90680 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 816093 is about 903.3786581495. The cubic root of 816093 is about 93.4501244859.

The spelling of 816093 in words is "eight hundred sixteen thousand, ninety-three".