6488990 has 32 divisors (see below), whose sum is σ = 12363840. Its totient is φ = 2447104.

The previous prime is 6488987. The next prime is 6489083. The reversal of 6488990 is 998846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20312 + ... + 20628.

It is an arithmetic number, because the mean of its divisors is an integer number (386370).

Almost surely, 2^6488990 is an apocalyptic number.

6488990 is a deficient number, since it is larger than the sum of its proper divisors (5874850).

6488990 is a wasteful number, since it uses less digits than its factorization.

6488990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 6488990 is about 2547.3496030188. The cubic root of 6488990 is about 186.5201266292.

The spelling of 6488990 in words is "six million, four hundred eighty-eight thousand, nine hundred ninety".