5681739 has 16 divisors (see below), whose sum is σ = 8870400. Its totient is φ = 3167040.

The previous prime is 5681737. The next prime is 5681743. The reversal of 5681739 is 9371865.

It is not a de Polignac number, because 5681739 - 2¹ = 5681737 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 5681697 and 5681706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2439 + ... + 4160.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^5681739 is an apocalyptic number.

5681739 is a deficient number, since it is larger than the sum of its proper divisors (3188661).

5681739 is a wasteful number, since it uses less digits than its factorization.

5681739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650.

The product of its digits is 45360, while the sum is 39.

The square root of 5681739 is about 2383.6398637378. The cubic root of 5681739 is about 178.4406349520.

The spelling of 5681739 in words is "five million, six hundred eighty-one thousand, seven hundred thirty-nine".