818794 has 4 divisors (see below), whose sum is σ = 1228194. Its totient is φ = 409396.

The previous prime is 818723. The next prime is 818813. The reversal of 818794 is 497818.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 497818 = 2 ⋅248909.

It can be written as a sum of positive squares in only one way, i.e., 543169 + 275625 = 737^2 + 525^2 .

It is a super-2 number, since 2×818794² = 1340847228872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204697 + ... + 204700.

2⁸¹⁸⁷⁹⁴ is an apocalyptic number.

818794 is a deficient number, since it is larger than the sum of its proper divisors (409400).

818794 is a wasteful number, since it uses less digits than its factorization.

818794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409399.

The product of its digits is 16128, while the sum is 37.

The square root of 818794 is about 904.8723666905. The cubic root of 818794 is about 93.5531073705.

It can be divided in two parts, 8187 and 94, that added together give a square (8281 = 91²).

The spelling of 818794 in words is "eight hundred eighteen thousand, seven hundred ninety-four".