813097 has 2 divisors, whose sum is σ = 813098. Its totient is φ = 813096.

The previous prime is 813091. The next prime is 813107. The reversal of 813097 is 790318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811801 + 1296 = 901^2 + 36^2 .

It is a cyclic number.

It is not a de Polignac number, because 813097 - 2³ = 813089 is a prime.

It is a super-2 number, since 2×813097² = 1322253462818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406548 + 406549.

It is an arithmetic number, because the mean of its divisors is an integer number (406549).

2⁸¹³⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

813097 is a deficient number, since it is larger than the sum of its proper divisors (1).

813097 is an equidigital number, since it uses as much as digits as its factorization.

813097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 813097 is about 901.7189140747. The cubic root of 813097 is about 93.3356277781.

The spelling of 813097 in words is "eight hundred thirteen thousand, ninety-seven".