5681536 has 64 divisors (see below), whose sum is σ = 13733280. Its totient is φ = 2285568.

The previous prime is 5681531. The next prime is 5681561. The reversal of 5681536 is 6351865.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15046 + ... + 15418.

Almost surely, 2^5681536 is an apocalyptic number.

5681536 is a gapful number since it is divisible by the number (56) 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 5681536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6866640).

5681536 is an abundant number, since it is smaller than the sum of its proper divisors (8051744).

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

5681536 is a wasteful number, since it uses less digits than its factorization.

5681536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 399 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 5681536 is about 2383.5972814215. The cubic root of 5681536 is about 178.4385097880.

The spelling of 5681536 in words is "five million, six hundred eighty-one thousand, five hundred thirty-six".