6797640 has 64 divisors (see below), whose sum is σ = 20957760. Its totient is φ = 1762560.

The previous prime is 6797639. The next prime is 6797647. The reversal of 6797640 is 467976.

It is not an unprimeable number, because it can be changed into a prime (6797647) 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, 3675 + ... + 5205.

It is an arithmetic number, because the mean of its divisors is an integer number (327465).

Almost surely, 2^6797640 is an apocalyptic number.

6797640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6797640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10478880).

6797640 is an abundant number, since it is smaller than the sum of its proper divisors (14160120).

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

6797640 is a wasteful number, since it uses less digits than its factorization.

6797640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1578 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 6797640 is about 2607.2284134690. The cubic root of 6797640 is about 189.4317277145.

The spelling of 6797640 in words is "six million, seven hundred ninety-seven thousand, six hundred forty".