140714681 has 2 divisors, whose sum is σ = 140714682. Its totient is φ = 140714680.

The previous prime is 140714677. The next prime is 140714683. The reversal of 140714681 is 186417041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105904681 + 34810000 = 10291^2 + 5900^2 .

It is an emirp because it is prime and its reverse (186417041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140714681 - 2² = 140714677 is a prime.

It is a super-2 number, since 2×140714681² = 39601242897863522, which contains 22 as substring.

Together with 140714683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140714683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70357340 + 70357341.

It is an arithmetic number, because the mean of its divisors is an integer number (70357341).

Almost surely, 2^140714681 is an apocalyptic number.

It is an amenable number.

140714681 is a deficient number, since it is larger than the sum of its proper divisors (1).

140714681 is an equidigital number, since it uses as much as digits as its factorization.

140714681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 140714681 is about 11862.3219059339. The cubic root of 140714681 is about 520.1314768631.

The spelling of 140714681 in words is "one hundred forty million, seven hundred fourteen thousand, six hundred eighty-one".