6497458997 has 4 divisors (see below), whose sum is σ = 6588972576. Its totient is φ = 6405945420.

The previous prime is 6497458987. The next prime is 6497458999. The reversal of 6497458997 is 7998547946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6497458997 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 (6497458999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45756683 + ... + 45756824.

It is an arithmetic number, because the mean of its divisors is an integer number (1647243144).

Almost surely, 2^6497458997 is an apocalyptic number.

It is an amenable number.

6497458997 is a deficient number, since it is larger than the sum of its proper divisors (91513579).

6497458997 is an equidigital number, since it uses as much as digits as its factorization.

6497458997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91513578.

The product of its digits is 137168640, while the sum is 68.

The square root of 6497458997 is about 80606.8173109446. The cubic root of 6497458997 is about 1866.0123589677.

The spelling of 6497458997 in words is "six billion, four hundred ninety-seven million, four hundred fifty-eight thousand, nine hundred ninety-seven".