6899564 has 36 divisors (see below), whose sum is σ = 14340144. Its totient is φ = 2845248.

The previous prime is 6899561. The next prime is 6899573. The reversal of 6899564 is 4659986.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6899561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23402 + ... + 23694.

Almost surely, 2^6899564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6899564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7170072).

6899564 is an abundant number, since it is smaller than the sum of its proper divisors (7440580).

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

6899564 is a wasteful number, since it uses less digits than its factorization.

6899564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 331 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 6899564 is about 2626.7021148200. The cubic root of 6899564 is about 190.3738162214.

The spelling of 6899564 in words is "six million, eight hundred ninety-nine thousand, five hundred sixty-four".