5681399 has 8 divisors (see below), whose sum is σ = 6071040. Its totient is φ = 5300856.

The previous prime is 5681381. The next prime is 5681413. The reversal of 5681399 is 9931865.

5681399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5681399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681309) 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, 959 + ... + 3504.

It is an arithmetic number, because the mean of its divisors is an integer number (758880).

Almost surely, 2^5681399 is an apocalyptic number.

5681399 is a deficient number, since it is larger than the sum of its proper divisors (389641).

5681399 is a wasteful number, since it uses less digits than its factorization.

5681399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549.

The product of its digits is 58320, while the sum is 41.

The square root of 5681399 is about 2383.5685431722. The cubic root of 5681399 is about 178.4370755355.

The spelling of 5681399 in words is "five million, six hundred eighty-one thousand, three hundred ninety-nine".