140644583 has 2 divisors, whose sum is σ = 140644584. Its totient is φ = 140644582.

The previous prime is 140644549. The next prime is 140644597. The reversal of 140644583 is 385446041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140644583 - 2¹⁸ = 140382439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140644513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70322291 + 70322292.

It is an arithmetic number, because the mean of its divisors is an integer number (70322292).

Almost surely, 2^140644583 is an apocalyptic number.

140644583 is a deficient number, since it is larger than the sum of its proper divisors (1).

140644583 is an equidigital number, since it uses as much as digits as its factorization.

140644583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 140644583 is about 11859.3668886665. The cubic root of 140644583 is about 520.0450934760.

The spelling of 140644583 in words is "one hundred forty million, six hundred forty-four thousand, five hundred eighty-three".