6536646 has 64 divisors (see below), whose sum is σ = 16012800. Its totient is φ = 1967328.

The previous prime is 6536633. The next prime is 6536659. The reversal of 6536646 is 6466356.

6536646 is a `hidden beast` number, since 6 + 5 + 3 + 6 + 646 = 666.

It is an interprime number because it is at equal distance from previous prime (6536633) and next prime (6536659).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (77760) is a multiple of the sum of its prime divisors (324).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6536646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23460 + ... + 23736.

It is an arithmetic number, because the mean of its divisors is an integer number (250200).

Almost surely, 2^6536646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6536646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8006400).

6536646 is an abundant number, since it is smaller than the sum of its proper divisors (9476154).

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

6536646 is a wasteful number, since it uses less digits than its factorization.

6536646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 324 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 6536646 is about 2556.6865275196. The cubic root of 6536646 is about 186.9756228530.

The spelling of 6536646 in words is "six million, five hundred thirty-six thousand, six hundred forty-six".