813007 has 4 divisors (see below), whose sum is σ = 875560. Its totient is φ = 750456.

The previous prime is 812969. The next prime is 813013. The reversal of 813007 is 700318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700318 = 2 ⋅350159.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813007 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813017) 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 3 ways as a sum of consecutive naturals, for example, 31257 + ... + 31282.

It is an arithmetic number, because the mean of its divisors is an integer number (218890).

2⁸¹³⁰⁰⁷ is an apocalyptic number.

813007 is a deficient number, since it is larger than the sum of its proper divisors (62553).

813007 is a wasteful number, since it uses less digits than its factorization.

813007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62552.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 813007 is about 901.6690080068. The cubic root of 813007 is about 93.3321839428.

The spelling of 813007 in words is "eight hundred thirteen thousand, seven".