6486745 has 4 divisors (see below), whose sum is σ = 7784100. Its totient is φ = 5189392.

The previous prime is 6486737. The next prime is 6486751. The reversal of 6486745 is 5476846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5476846 = 2 ⋅2738423.

It can be written as a sum of positive squares in 2 ways, for example, as 4481689 + 2005056 = 2117^2 + 1416^2 .

It is a cyclic number.

It is not a de Polignac number, because 6486745 - 2³ = 6486737 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 6486698 and 6486707.

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, 648670 + ... + 648679.

It is an arithmetic number, because the mean of its divisors is an integer number (1946025).

Almost surely, 2^6486745 is an apocalyptic number.

It is an amenable number.

6486745 is a deficient number, since it is larger than the sum of its proper divisors (1297355).

6486745 is a wasteful number, since it uses less digits than its factorization.

6486745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297354.

The product of its digits is 161280, while the sum is 40.

The square root of 6486745 is about 2546.9089108172. The cubic root of 6486745 is about 186.4986139858.

The spelling of 6486745 in words is "six million, four hundred eighty-six thousand, seven hundred forty-five".