715813 has 4 divisors (see below), whose sum is σ = 818080. Its totient is φ = 613548.

The previous prime is 715811. The next prime is 715817. The reversal of 715813 is 318517.

715813 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 318517 = 443 ⋅719.

It is a cyclic number.

It is not a de Polignac number, because 715813 - 2¹ = 715811 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715811) 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, 51123 + ... + 51136.

It is an arithmetic number, because the mean of its divisors is an integer number (204520).

2⁷¹⁵⁸¹³ is an apocalyptic number.

It is an amenable number.

715813 is a deficient number, since it is larger than the sum of its proper divisors (102267).

715813 is a wasteful number, since it uses less digits than its factorization.

715813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102266.

The product of its digits is 840, while the sum is 25.

The square root of 715813 is about 846.0573266629. The cubic root of 715813 is about 89.4540196388.

The spelling of 715813 in words is "seven hundred fifteen thousand, eight hundred thirteen".