6506849 has 4 divisors (see below), whose sum is σ = 6525636. Its totient is φ = 6488064.

The previous prime is 6506813. The next prime is 6506881. The reversal of 6506849 is 9486056.

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 3150625 + 3356224 = 1775^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 6506849 - 2¹² = 6502753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6500849) 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, 8864 + ... + 9569.

It is an arithmetic number, because the mean of its divisors is an integer number (1631409).

Almost surely, 2^6506849 is an apocalyptic number.

It is an amenable number.

6506849 is a deficient number, since it is larger than the sum of its proper divisors (18787).

6506849 is a wasteful number, since it uses less digits than its factorization.

6506849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18786.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6506849 is about 2550.8526025625. The cubic root of 6506849 is about 186.6910834699.

The spelling of 6506849 in words is "six million, five hundred six thousand, eight hundred forty-nine".