6491297 has 4 divisors (see below), whose sum is σ = 6873156. Its totient is φ = 6109440.

The previous prime is 6491257. The next prime is 6491299. The reversal of 6491297 is 7921946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2202256 + 4289041 = 1484^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 6491297 - 2¹⁰ = 6490273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6491297.

It is not an unprimeable number, because it can be changed into a prime (6491299) 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, 190904 + ... + 190937.

It is an arithmetic number, because the mean of its divisors is an integer number (1718289).

Almost surely, 2^6491297 is an apocalyptic number.

It is an amenable number.

6491297 is a deficient number, since it is larger than the sum of its proper divisors (381859).

6491297 is a wasteful number, since it uses less digits than its factorization.

6491297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381858.

The product of its digits is 27216, while the sum is 38.

The square root of 6491297 is about 2547.8023863714. The cubic root of 6491297 is about 186.5422282171.

It can be divided in two parts, 649 and 1297, that multiplied together give a triangular number (841753 = T₁₂₉₇).

The spelling of 6491297 in words is "six million, four hundred ninety-one thousand, two hundred ninety-seven".