6897537517 has 16 divisors (see below), whose sum is σ = 7877459520. Its totient is φ = 5982988032.

The previous prime is 6897537481. The next prime is 6897537527. The reversal of 6897537517 is 7157357986.

It is a cyclic number.

It is not a de Polignac number, because 6897537517 - 2²⁷ = 6763319789 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 (6897537527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117834 + ... + 166372.

It is an arithmetic number, because the mean of its divisors is an integer number (492341220).

Almost surely, 2^6897537517 is an apocalyptic number.

It is an amenable number.

6897537517 is a deficient number, since it is larger than the sum of its proper divisors (979922003).

6897537517 is a wasteful number, since it uses less digits than its factorization.

6897537517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49212.

The product of its digits is 11113200, while the sum is 58.

The square root of 6897537517 is about 83051.4149006505. The cubic root of 6897537517 is about 1903.5517605427.

The spelling of 6897537517 in words is "six billion, eight hundred ninety-seven million, five hundred thirty-seven thousand, five hundred seventeen".