6531697 has 4 divisors (see below), whose sum is σ = 6638836. Its totient is φ = 6424560.

The previous prime is 6531683. The next prime is 6531703. The reversal of 6531697 is 7961356.

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 848241 + 5683456 = 921^2 + 2384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6531697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6531617) 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, 53478 + ... + 53599.

It is an arithmetic number, because the mean of its divisors is an integer number (1659709).

Almost surely, 2^6531697 is an apocalyptic number.

It is an amenable number.

6531697 is a deficient number, since it is larger than the sum of its proper divisors (107139).

6531697 is a wasteful number, since it uses less digits than its factorization.

6531697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107138.

The product of its digits is 34020, while the sum is 37.

The square root of 6531697 is about 2555.7184899750. The cubic root of 6531697 is about 186.9284235204.

The spelling of 6531697 in words is "six million, five hundred thirty-one thousand, six hundred ninety-seven".