6897865 has 8 divisors (see below), whose sum is σ = 8914248. Its totient is φ = 5093760.

The previous prime is 6897857. The next prime is 6897883. The reversal of 6897865 is 5687986.

It can be written as a sum of positive squares in 4 ways, for example, as 727609 + 6170256 = 853^2 + 2484^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6897865 - 2³ = 6897857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52996 + ... + 53125.

It is an arithmetic number, because the mean of its divisors is an integer number (1114281).

Almost surely, 2^6897865 is an apocalyptic number.

6897865 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6897865 is a deficient number, since it is larger than the sum of its proper divisors (2016383).

6897865 is a wasteful number, since it uses less digits than its factorization.

6897865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106139.

The product of its digits is 725760, while the sum is 49.

The square root of 6897865 is about 2626.3786855669. The cubic root of 6897865 is about 190.3581885834.

The spelling of 6897865 in words is "six million, eight hundred ninety-seven thousand, eight hundred sixty-five".