816494 has 8 divisors (see below), whose sum is σ = 1399728. Its totient is φ = 349920.

The previous prime is 816469. The next prime is 816499. The reversal of 816494 is 494618.

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

It is a self number, because there is not a number n which added to its sum of digits gives 816494.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29147 + ... + 29174.

It is an arithmetic number, because the mean of its divisors is an integer number (174966).

2⁸¹⁶⁴⁹⁴ is an apocalyptic number.

816494 is a deficient number, since it is larger than the sum of its proper divisors (583234).

816494 is a wasteful number, since it uses less digits than its factorization.

816494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58330.

The product of its digits is 6912, while the sum is 32.

The square root of 816494 is about 903.6005754757. The cubic root of 816494 is about 93.4654280375.

The spelling of 816494 in words is "eight hundred sixteen thousand, four hundred ninety-four".