6814561 has 4 divisors (see below), whose sum is σ = 7338772. Its totient is φ = 6290352.

The previous prime is 6814553. The next prime is 6814573. The reversal of 6814561 is 1654186.

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 4124961 + 2689600 = 2031^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 6814561 - 2³ = 6814553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6814061) 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, 262086 + ... + 262111.

It is an arithmetic number, because the mean of its divisors is an integer number (1834693).

Almost surely, 2^6814561 is an apocalyptic number.

It is an amenable number.

6814561 is a deficient number, since it is larger than the sum of its proper divisors (524211).

6814561 is a wasteful number, since it uses less digits than its factorization.

6814561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524210.

The product of its digits is 5760, while the sum is 31.

The square root of 6814561 is about 2610.4714133658. The cubic root of 6814561 is about 189.5887782145.

The spelling of 6814561 in words is "six million, eight hundred fourteen thousand, five hundred sixty-one".