140206663 has 2 divisors, whose sum is σ = 140206664. Its totient is φ = 140206662.

The previous prime is 140206601. The next prime is 140206669. The reversal of 140206663 is 366602041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140206663 - 2²¹ = 138109511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140206669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70103331 + 70103332.

It is an arithmetic number, because the mean of its divisors is an integer number (70103332).

Almost surely, 2^140206663 is an apocalyptic number.

140206663 is a deficient number, since it is larger than the sum of its proper divisors (1).

140206663 is an equidigital number, since it uses as much as digits as its factorization.

140206663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 140206663 is about 11840.8894513884. The cubic root of 140206663 is about 519.5047837134.

The spelling of 140206663 in words is "one hundred forty million, two hundred six thousand, six hundred sixty-three".