6497121 has 4 divisors (see below), whose sum is σ = 8662832. Its totient is φ = 4331412.

The previous prime is 6497087. The next prime is 6497123. The reversal of 6497121 is 1217946.

It is a happy number.

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 de Polignac number, because none of the positive numbers 2^k-6497121 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6497123) 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, 1082851 + ... + 1082856.

It is an arithmetic number, because the mean of its divisors is an integer number (2165708).

Almost surely, 2^6497121 is an apocalyptic number.

It is an amenable number.

6497121 is a deficient number, since it is larger than the sum of its proper divisors (2165711).

6497121 is a wasteful number, since it uses less digits than its factorization.

6497121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165710.

The product of its digits is 3024, while the sum is 30.

The square root of 6497121 is about 2548.9450759089. The cubic root of 6497121 is about 186.5980001831.

The spelling of 6497121 in words is "six million, four hundred ninety-seven thousand, one hundred twenty-one".