6492991 has 2 divisors, whose sum is σ = 6492992. Its totient is φ = 6492990.

The previous prime is 6492961. The next prime is 6493001. The reversal of 6492991 is 1992946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6492991 - 2¹¹ = 6490943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6492911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3246495 + 3246496.

It is an arithmetic number, because the mean of its divisors is an integer number (3246496).

Almost surely, 2^6492991 is an apocalyptic number.

6492991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6492991 is an equidigital number, since it uses as much as digits as its factorization.

6492991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 40.

The square root of 6492991 is about 2548.1348080508. The cubic root of 6492991 is about 186.5584537906.

The spelling of 6492991 in words is "six million, four hundred ninety-two thousand, nine hundred ninety-one".