813436 has 12 divisors (see below), whose sum is σ = 1533112. Its totient is φ = 375408.

The previous prime is 813427. The next prime is 813443. The reversal of 813436 is 634318.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 813436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7770 + ... + 7873.

2⁸¹³⁴³⁶ is an apocalyptic number.

It is an amenable number.

813436 is a deficient number, since it is larger than the sum of its proper divisors (719676).

813436 is a wasteful number, since it uses less digits than its factorization.

813436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15660 (or 15658 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 813436 is about 901.9068688063. The cubic root of 813436 is about 93.3485972768.

The spelling of 813436 in words is "eight hundred thirteen thousand, four hundred thirty-six".