6491397 has 8 divisors (see below), whose sum is σ = 9442080. Its totient is φ = 3934160.

The previous prime is 6491377. The next prime is 6491411. The reversal of 6491397 is 7931946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6491397 - 2⁶ = 6491333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98322 + ... + 98387.

It is an arithmetic number, because the mean of its divisors is an integer number (1180260).

Almost surely, 2^6491397 is an apocalyptic number.

It is an amenable number.

6491397 is a deficient number, since it is larger than the sum of its proper divisors (2950683).

6491397 is a wasteful number, since it uses less digits than its factorization.

6491397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196723.

The product of its digits is 40824, while the sum is 39.

The square root of 6491397 is about 2547.8220110518. The cubic root of 6491397 is about 186.5431861216.

The spelling of 6491397 in words is "six million, four hundred ninety-one thousand, three hundred ninety-seven".