5681923 has 4 divisors (see below), whose sum is σ = 6119008. Its totient is φ = 5244840.

The previous prime is 5681911. The next prime is 5681933. The reversal of 5681923 is 3291865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5681923 - 2²¹ = 3584771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5681933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218523 + ... + 218548.

It is an arithmetic number, because the mean of its divisors is an integer number (1529752).

Almost surely, 2^5681923 is an apocalyptic number.

5681923 is a deficient number, since it is larger than the sum of its proper divisors (437085).

5681923 is a wasteful number, since it uses less digits than its factorization.

5681923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437084.

The product of its digits is 12960, while the sum is 34.

The square root of 5681923 is about 2383.6784598599. The cubic root of 5681923 is about 178.4425611652.

The spelling of 5681923 in words is "five million, six hundred eighty-one thousand, nine hundred twenty-three".