6897618 has 48 divisors (see below), whose sum is σ = 18398016. Its totient is φ = 1818720.

The previous prime is 6897607. The next prime is 6897637. The reversal of 6897618 is 8167986.

It is a happy number.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468 + ... + 3743.

It is an arithmetic number, because the mean of its divisors is an integer number (383292).

Almost surely, 2^6897618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6897618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9199008).

6897618 is an abundant number, since it is smaller than the sum of its proper divisors (11500398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6897618 is a wasteful number, since it uses less digits than its factorization.

6897618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239 (or 4236 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 6897618 is about 2626.3316622239. The cubic root of 6897618 is about 190.3559164294.

The spelling of 6897618 in words is "six million, eight hundred ninety-seven thousand, six hundred eighteen".