Search a number
-
+
681137 is a prime number
BaseRepresentation
bin10100110010010110001
31021121100022
42212102301
5133244022
622333225
75534552
oct2462261
91247308
10681137
11425826
1228a215
131ab052
1413a329
15d6c42
hexa64b1

681137 has 2 divisors, whose sum is σ = 681138. Its totient is φ = 681136.

The previous prime is 681127. The next prime is 681151. The reversal of 681137 is 731186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602176 + 78961 = 776^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 681137 - 28 = 680881 is a prime.

It is a super-2 number, since 2×6811372 = 927895225538, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681137.

It is not a weakly prime, because it can be changed into another prime (681127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340568 + 340569.

It is an arithmetic number, because the mean of its divisors is an integer number (340569).

2681137 is an apocalyptic number.

It is an amenable number.

681137 is a deficient number, since it is larger than the sum of its proper divisors (1).

681137 is an equidigital number, since it uses as much as digits as its factorization.

681137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 681137 is about 825.3102446959. The cubic root of 681137 is about 87.9855778707.

It can be divided in two parts, 681 and 137, that added together give a palindrome (818).

The spelling of 681137 in words is "six hundred eighty-one thousand, one hundred thirty-seven".