6897657 has 16 divisors (see below), whose sum is σ = 9979200. Its totient is φ = 4212672.

The previous prime is 6897643. The next prime is 6897659. The reversal of 6897657 is 7567986.

It is not a de Polignac number, because 6897657 - 2⁴ = 6897641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6897659) 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, 5218 + ... + 6404.

It is an arithmetic number, because the mean of its divisors is an integer number (623700).

Almost surely, 2^6897657 is an apocalyptic number.

It is an amenable number.

6897657 is a deficient number, since it is larger than the sum of its proper divisors (3081543).

6897657 is a wasteful number, since it uses less digits than its factorization.

6897657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352.

The product of its digits is 635040, while the sum is 48.

The square root of 6897657 is about 2626.3390870183. The cubic root of 6897657 is about 190.3562751942.

The spelling of 6897657 in words is "six million, eight hundred ninety-seven thousand, six hundred fifty-seven".