5681905 has 8 divisors (see below), whose sum is σ = 7002792. Its totient is φ = 4422528.

The previous prime is 5681899. The next prime is 5681911. The reversal of 5681905 is 5091865.

It is an interprime number because it is at equal distance from previous prime (5681899) and next prime (5681911).

It can be written as a sum of positive squares in 4 ways, for example, as 2819041 + 2862864 = 1679^2 + 1692^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5681905 - 2⁷ = 5681777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15172 + ... + 15541.

It is an arithmetic number, because the mean of its divisors is an integer number (875349).

Almost surely, 2^5681905 is an apocalyptic number.

It is an amenable number.

5681905 is a deficient number, since it is larger than the sum of its proper divisors (1320887).

5681905 is a wasteful number, since it uses less digits than its factorization.

5681905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30755.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 5681905 is about 2383.6746841799. The cubic root of 5681905 is about 178.4423727331.

The spelling of 5681905 in words is "five million, six hundred eighty-one thousand, nine hundred five".