6279561 has 6 divisors (see below), whose sum is σ = 9070490. Its totient is φ = 4186368.

The previous prime is 6279551. The next prime is 6279569. The reversal of 6279561 is 1659726.

It can be written as a sum of positive squares in only one way, i.e., 4473225 + 1806336 = 2115^2 + 1344^2 .

It is not a de Polignac number, because 6279561 - 2¹⁰ = 6278537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6279569) 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 5 ways as a sum of consecutive naturals, for example, 348856 + ... + 348873.

Almost surely, 2^6279561 is an apocalyptic number.

It is an amenable number.

6279561 is a deficient number, since it is larger than the sum of its proper divisors (2790929).

6279561 is a wasteful number, since it uses less digits than its factorization.

6279561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697735 (or 697732 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 6279561 is about 2505.9052256620. The cubic root of 6279561 is about 184.4915280222.

The spelling of 6279561 in words is "six million, two hundred seventy-nine thousand, five hundred sixty-one".