5681957 has 6 divisors (see below), whose sum is σ = 5749074. Its totient is φ = 5615600.

The previous prime is 5681947. The next prime is 5681981. The reversal of 5681957 is 7591865.

It can be written as a sum of positive squares in 3 ways, for example, as 2563201 + 3118756 = 1601^2 + 1766^2 .

It is not a de Polignac number, because 5681957 - 2²⁰ = 4633381 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 (5681947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9923 + ... + 10479.

It is an arithmetic number, because the mean of its divisors is an integer number (958179).

Almost surely, 2^5681957 is an apocalyptic number.

It is an amenable number.

5681957 is a deficient number, since it is larger than the sum of its proper divisors (67117).

5681957 is an equidigital number, since it uses as much as digits as its factorization.

5681957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 658 counting only the distinct ones).

The product of its digits is 75600, while the sum is 41.

The square root of 5681957 is about 2383.6855916836. The cubic root of 5681957 is about 178.4429170913.

The spelling of 5681957 in words is "five million, six hundred eighty-one thousand, nine hundred fifty-seven".