7115813 has 4 divisors (see below), whose sum is σ = 7236480. Its totient is φ = 6995148.

The previous prime is 7115807. The next prime is 7115819. The reversal of 7115813 is 3185117.

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.

It is an interprime number because it is at equal distance from previous prime (7115807) and next prime (7115819).

It is a cyclic number.

It is not a de Polignac number, because 7115813 - 2⁶ = 7115749 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 (7115819) 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, 60245 + ... + 60362.

It is an arithmetic number, because the mean of its divisors is an integer number (1809120).

Almost surely, 2^7115813 is an apocalyptic number.

It is an amenable number.

7115813 is a deficient number, since it is larger than the sum of its proper divisors (120667).

7115813 is a wasteful number, since it uses less digits than its factorization.

7115813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120666.

The product of its digits is 840, while the sum is 26.

The square root of 7115813 is about 2667.5481251516. The cubic root of 7115813 is about 192.3423164775.

The spelling of 7115813 in words is "seven million, one hundred fifteen thousand, eight hundred thirteen".