140067643 has 2 divisors, whose sum is σ = 140067644. Its totient is φ = 140067642.

The previous prime is 140067617. The next prime is 140067649. The reversal of 140067643 is 346760041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140067643 - 2⁵ = 140067611 is a prime.

It is not a weakly prime, because it can be changed into another prime (140067649) 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, 70033821 + 70033822.

It is an arithmetic number, because the mean of its divisors is an integer number (70033822).

Almost surely, 2^140067643 is an apocalyptic number.

140067643 is a deficient number, since it is larger than the sum of its proper divisors (1).

140067643 is an equidigital number, since it uses as much as digits as its factorization.

140067643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 140067643 is about 11835.0176594714. The cubic root of 140067643 is about 519.3330243102. Note that the first 3 decimals are identical.

The spelling of 140067643 in words is "one hundred forty million, sixty-seven thousand, six hundred forty-three".