6862649 has 4 divisors (see below), whose sum is σ = 7048164. Its totient is φ = 6677136.

The previous prime is 6862643. The next prime is 6862693. The reversal of 6862649 is 9462686.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4515625 + 2347024 = 2125^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 6862649 - 2⁸ = 6862393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6862643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92702 + ... + 92775.

It is an arithmetic number, because the mean of its divisors is an integer number (1762041).

Almost surely, 2^6862649 is an apocalyptic number.

It is an amenable number.

6862649 is a deficient number, since it is larger than the sum of its proper divisors (185515).

6862649 is a wasteful number, since it uses less digits than its factorization.

6862649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185514.

The product of its digits is 124416, while the sum is 41.

The square root of 6862649 is about 2619.6658183822. The cubic root of 6862649 is about 190.0336874709.

The spelling of 6862649 in words is "six million, eight hundred sixty-two thousand, six hundred forty-nine".