701681 has 2 divisors, whose sum is σ = 701682. Its totient is φ = 701680.

The previous prime is 701671. The next prime is 701699. The reversal of 701681 is 186107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614656 + 87025 = 784^2 + 295^2 .

It is an emirp because it is prime and its reverse (186107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 701681 - 2¹⁴ = 685297 is a prime.

It is a super-2 number, since 2×701681² = 984712451522, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 701681.

It is not a weakly prime, because it can be changed into another prime (701611) 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 as a sum of consecutive naturals, namely, 350840 + 350841.

It is an arithmetic number, because the mean of its divisors is an integer number (350841).

2⁷⁰¹⁶⁸¹ is an apocalyptic number.

It is an amenable number.

701681 is a deficient number, since it is larger than the sum of its proper divisors (1).

701681 is an equidigital number, since it uses as much as digits as its factorization.

701681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 701681 is about 837.6640137907. The cubic root of 701681 is about 88.8614179578.

Adding to 701681 its reverse (186107), we get a palindrome (887788).

The spelling of 701681 in words is "seven hundred one thousand, six hundred eighty-one".