6489581 has 4 divisors (see below), whose sum is σ = 7416672. Its totient is φ = 5562492.

The previous prime is 6489577. The next prime is 6489599. The reversal of 6489581 is 1859846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6489581 - 2² = 6489577 is a prime.

It is a super-2 number, since 2×6489581² = 84229323111122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489551) 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, 463535 + ... + 463548.

It is an arithmetic number, because the mean of its divisors is an integer number (1854168).

Almost surely, 2^6489581 is an apocalyptic number.

It is an amenable number.

6489581 is a deficient number, since it is larger than the sum of its proper divisors (927091).

6489581 is an equidigital number, since it uses as much as digits as its factorization.

6489581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927090.

The product of its digits is 69120, while the sum is 41.

The square root of 6489581 is about 2547.4656033007. The cubic root of 6489581 is about 186.5257890435.

The spelling of 6489581 in words is "six million, four hundred eighty-nine thousand, five hundred eighty-one".