6528997 has 4 divisors (see below), whose sum is σ = 6563020. Its totient is φ = 6494976.

The previous prime is 6528979. The next prime is 6529021. The reversal of 6528997 is 7998256.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3147076 + 3381921 = 1774^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 6528997 - 2⁷ = 6528869 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 (6528917) 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, 16722 + ... + 17107.

It is an arithmetic number, because the mean of its divisors is an integer number (1640755).

Almost surely, 2^6528997 is an apocalyptic number.

It is an amenable number.

6528997 is a deficient number, since it is larger than the sum of its proper divisors (34023).

6528997 is a wasteful number, since it uses less digits than its factorization.

6528997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34022.

The product of its digits is 272160, while the sum is 46.

The square root of 6528997 is about 2555.1902081841. The cubic root of 6528997 is about 186.9026631755.

The spelling of 6528997 in words is "six million, five hundred twenty-eight thousand, nine hundred ninety-seven".