6498391 has 4 divisors (see below), whose sum is σ = 6604984. Its totient is φ = 6391800.

The previous prime is 6498379. The next prime is 6498419. The reversal of 6498391 is 1938946.

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

It is a cyclic number.

It is not a de Polignac number, because 6498391 - 2¹⁵ = 6465623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6498311) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 53205 + ... + 53326.

It is an arithmetic number, because the mean of its divisors is an integer number (1651246).

Almost surely, 2^6498391 is an apocalyptic number.

6498391 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6498391 is a deficient number, since it is larger than the sum of its proper divisors (106593).

6498391 is a wasteful number, since it uses less digits than its factorization.

6498391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106592.

The product of its digits is 46656, while the sum is 40.

The square root of 6498391 is about 2549.1941864048. The cubic root of 6498391 is about 186.6101575689.

It can be divided in two parts, 6498 and 391, that added together give a square (6889 = 83²).

The spelling of 6498391 in words is "six million, four hundred ninety-eight thousand, three hundred ninety-one".