6491090 has 16 divisors (see below), whose sum is σ = 12061440. Its totient is φ = 2512560.

The previous prime is 6491081. The next prime is 6491101. The reversal of 6491090 is 901946.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 10160 + ... + 10779.

It is an arithmetic number, because the mean of its divisors is an integer number (753840).

Almost surely, 2^6491090 is an apocalyptic number.

6491090 is a deficient number, since it is larger than the sum of its proper divisors (5570350).

6491090 is a wasteful number, since it uses less digits than its factorization.

6491090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20977.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 6491090 is about 2547.7617628028. The cubic root of 6491090 is about 186.5402453236.

The spelling of 6491090 in words is "six million, four hundred ninety-one thousand, ninety".