7856113 has 4 divisors (see below), whose sum is σ = 8109568. Its totient is φ = 7602660.

The previous prime is 7856089. The next prime is 7856161. The reversal of 7856113 is 3116587.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7856113 is a prime.

It is a super-2 number, since 2×7856113² = 123437022937538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 253423 = 7856113 / (7 + 8 + 5 + 6 + 1 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7856213) 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, 126681 + ... + 126742.

It is an arithmetic number, because the mean of its divisors is an integer number (2027392).

Almost surely, 2^7856113 is an apocalyptic number.

It is an amenable number.

7856113 is a deficient number, since it is larger than the sum of its proper divisors (253455).

7856113 is a wasteful number, since it uses less digits than its factorization.

7856113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253454.

The product of its digits is 5040, while the sum is 31.

The square root of 7856113 is about 2802.8758445568. The cubic root of 7856113 is about 198.7936802588.

The spelling of 7856113 in words is "seven million, eight hundred fifty-six thousand, one hundred thirteen".