5681606237 has 2 divisors, whose sum is σ = 5681606238. Its totient is φ = 5681606236.

The previous prime is 5681606219. The next prime is 5681606263. The reversal of 5681606237 is 7326061865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3526696996 + 2154909241 = 59386^2 + 46421^2 .

It is a cyclic number.

It is not a de Polignac number, because 5681606237 - 2⁶ = 5681606173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5681606267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840803118 + 2840803119.

It is an arithmetic number, because the mean of its divisors is an integer number (2840803119).

Almost surely, 2^5681606237 is an apocalyptic number.

It is an amenable number.

5681606237 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681606237 is an equidigital number, since it uses as much as digits as its factorization.

5681606237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 5681606237 is about 75376.4302484537. The cubic root of 5681606237 is about 1784.3924509002.

The spelling of 5681606237 in words is "five billion, six hundred eighty-one million, six hundred six thousand, two hundred thirty-seven".