7986845 has 4 divisors (see below), whose sum is σ = 9584220. Its totient is φ = 6389472.

The previous prime is 7986829. The next prime is 7986877. The reversal of 7986845 is 5486897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5486897 = 13 ⋅422069.

It can be written as a sum of positive squares in 2 ways, for example, as 900601 + 7086244 = 949^2 + 2662^2 .

It is a cyclic number.

It is not a de Polignac number, because 7986845 - 2⁴ = 7986829 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7986845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798680 + ... + 798689.

It is an arithmetic number, because the mean of its divisors is an integer number (2396055).

Almost surely, 2^7986845 is an apocalyptic number.

It is an amenable number.

7986845 is a deficient number, since it is larger than the sum of its proper divisors (1597375).

7986845 is a wasteful number, since it uses less digits than its factorization.

7986845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597374.

The product of its digits is 483840, while the sum is 47.

The square root of 7986845 is about 2826.1006705353. The cubic root of 7986845 is about 199.8903148568.

The spelling of 7986845 in words is "seven million, nine hundred eighty-six thousand, eight hundred forty-five".