140620717 has 2 divisors, whose sum is σ = 140620718. Its totient is φ = 140620716.

The previous prime is 140620679. The next prime is 140620721. The reversal of 140620717 is 717026041.

140620717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112805641 + 27815076 = 10621^2 + 5274^2 .

It is a cyclic number.

It is not a de Polignac number, because 140620717 - 2²³ = 132232109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140620517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70310358 + 70310359.

It is an arithmetic number, because the mean of its divisors is an integer number (70310359).

Almost surely, 2^140620717 is an apocalyptic number.

It is an amenable number.

140620717 is a deficient number, since it is larger than the sum of its proper divisors (1).

140620717 is an equidigital number, since it uses as much as digits as its factorization.

140620717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 140620717 is about 11858.3606371201. The cubic root of 140620717 is about 520.0156763026.

Adding to 140620717 its reverse (717026041), we get a palindrome (857646758).

The spelling of 140620717 in words is "one hundred forty million, six hundred twenty thousand, seven hundred seventeen".