6544490 has 32 divisors (see below), whose sum is σ = 12608784. Its totient is φ = 2437120.

The previous prime is 6544487. The next prime is 6544547. The reversal of 6544490 is 944456.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4609609 + 1934881 = 2147^2 + 1391^2 .

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23150 + ... + 23430.

Almost surely, 2^6544490 is an apocalyptic number.

6544490 is a deficient number, since it is larger than the sum of its proper divisors (6064294).

6544490 is a wasteful number, since it uses less digits than its factorization.

6544490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6544490 is about 2558.2200843555. The cubic root of 6544490 is about 187.0503834423.

The spelling of 6544490 in words is "six million, five hundred forty-four thousand, four hundred ninety".