140020663 has 2 divisors, whose sum is σ = 140020664. Its totient is φ = 140020662.

The previous prime is 140020631. The next prime is 140020669. The reversal of 140020663 is 366020041.

140020663 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 is an emirp because it is prime and its reverse (366020041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140020663 - 2⁵ = 140020631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140020669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70010331 + 70010332.

It is an arithmetic number, because the mean of its divisors is an integer number (70010332).

Almost surely, 2^140020663 is an apocalyptic number.

140020663 is a deficient number, since it is larger than the sum of its proper divisors (1).

140020663 is an equidigital number, since it uses as much as digits as its factorization.

140020663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 140020663 is about 11833.0327051014. The cubic root of 140020663 is about 519.2749547631.

The spelling of 140020663 in words is "one hundred forty million, twenty thousand, six hundred sixty-three".