813607 has 4 divisors (see below), whose sum is σ = 815920. Its totient is φ = 811296.

The previous prime is 813601. The next prime is 813613. The reversal of 813607 is 706318.

813607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (813601) and next prime (813613).

It is a cyclic number.

It is not a de Polignac number, because 813607 - 2¹⁹ = 289319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813601) 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, 507 + ... + 1372.

It is an arithmetic number, because the mean of its divisors is an integer number (203980).

2⁸¹³⁶⁰⁷ is an apocalyptic number.

813607 is a deficient number, since it is larger than the sum of its proper divisors (2313).

813607 is a wasteful number, since it uses less digits than its factorization.

813607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 813607 is about 902.0016629696. The cubic root of 813607 is about 93.3551380461.

The spelling of 813607 in words is "eight hundred thirteen thousand, six hundred seven".