5681605 has 8 divisors (see below), whose sum is σ = 6831864. Its totient is φ = 4536000.

The previous prime is 5681603. The next prime is 5681617. The reversal of 5681605 is 5061865.

5681605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2169729 + 3511876 = 1473^2 + 1874^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5681605 - 2¹ = 5681603 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681603) 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, 2695 + ... + 4315.

It is an arithmetic number, because the mean of its divisors is an integer number (853983).

Almost surely, 2^5681605 is an apocalyptic number.

It is an amenable number.

5681605 is a deficient number, since it is larger than the sum of its proper divisors (1150259).

5681605 is a wasteful number, since it uses less digits than its factorization.

5681605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 5681605 is about 2383.6117552991. The cubic root of 5681605 is about 178.4392321401.

The spelling of 5681605 in words is "five million, six hundred eighty-one thousand, six hundred five".