6490 has 16 divisors (see below), whose sum is σ = 12960. Its totient is φ = 2320.

The previous prime is 6481. The next prime is 6491. The reversal of 6490 is 946.

6490 = 34² + 35² + ... + 38².

It is a happy number.

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (6491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81 + ... + 139.

It is an arithmetic number, because the mean of its divisors is an integer number (810).

6490 is a deficient number, since it is larger than the sum of its proper divisors (6470).

6490 is a wasteful number, since it uses less digits than its factorization.

6490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 6490 is about 80.5605362445. The cubic root of 6490 is about 18.6529803305.

It can be divided in two parts, 6 and 490, that added together give a triangular number (496 = T₃₁).

The spelling of 6490 in words is "six thousand, four hundred ninety".