6544961 has 4 divisors (see below), whose sum is σ = 6634692. Its totient is φ = 6455232.

The previous prime is 6544943. The next prime is 6545003. The reversal of 6544961 is 1694456.

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 5494336 + 1050625 = 2344^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544961 - 2²² = 2350657 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (6544261) 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, 44756 + ... + 44901.

It is an arithmetic number, because the mean of its divisors is an integer number (1658673).

Almost surely, 2^6544961 is an apocalyptic number.

It is an amenable number.

6544961 is a deficient number, since it is larger than the sum of its proper divisors (89731).

6544961 is an equidigital number, since it uses as much as digits as its factorization.

6544961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89730.

The product of its digits is 25920, while the sum is 35.

The square root of 6544961 is about 2558.3121388916. The cubic root of 6544961 is about 187.0548706072.

The spelling of 6544961 in words is "six million, five hundred forty-four thousand, nine hundred sixty-one".