7887313 has 4 divisors (see below), whose sum is σ = 9014080. Its totient is φ = 6760548.

The previous prime is 7887311. The next prime is 7887317. The reversal of 7887313 is 3137887.

7887313 is digitally balanced in base 8, 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: 3137887 = 29 ⋅108203.

It is a cyclic number.

It is not a de Polignac number, because 7887313 - 2¹ = 7887311 is a prime.

It is a Duffinian number.

7887313 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (7887311) 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, 563373 + ... + 563386.

It is an arithmetic number, because the mean of its divisors is an integer number (2253520).

Almost surely, 2^7887313 is an apocalyptic number.

It is an amenable number.

7887313 is a deficient number, since it is larger than the sum of its proper divisors (1126767).

7887313 is a wasteful number, since it uses less digits than its factorization.

7887313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126766.

The product of its digits is 28224, while the sum is 37.

The square root of 7887313 is about 2808.4360416431. The cubic root of 7887313 is about 199.0564976827.

The spelling of 7887313 in words is "seven million, eight hundred eighty-seven thousand, three hundred thirteen".