140632717 has 2 divisors, whose sum is σ = 140632718. Its totient is φ = 140632716.

The previous prime is 140632693. The next prime is 140632759. The reversal of 140632717 is 717236041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138744841 + 1887876 = 11779^2 + 1374^2 .

It is an emirp because it is prime and its reverse (717236041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140632717 - 2⁷ = 140632589 is a prime.

It is a super-2 number, since 2×140632717² = 39555122181604178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140632777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70316358 + 70316359.

It is an arithmetic number, because the mean of its divisors is an integer number (70316359).

Almost surely, 2^140632717 is an apocalyptic number.

It is an amenable number.

140632717 is a deficient number, since it is larger than the sum of its proper divisors (1).

140632717 is an equidigital number, since it uses as much as digits as its factorization.

140632717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 140632717 is about 11858.8665984570. The cubic root of 140632717 is about 520.0304678893.

Adding to 140632717 its reverse (717236041), we get a palindrome (857868758).

The spelling of 140632717 in words is "one hundred forty million, six hundred thirty-two thousand, seven hundred seventeen".