140746609 has 2 divisors, whose sum is σ = 140746610. Its totient is φ = 140746608.

The previous prime is 140746597. The next prime is 140746643. The reversal of 140746609 is 906647041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118919025 + 21827584 = 10905^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 140746609 - 2¹¹ = 140744561 is a prime.

It is not a weakly prime, because it can be changed into another prime (140786609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70373304 + 70373305.

It is an arithmetic number, because the mean of its divisors is an integer number (70373305).

Almost surely, 2^140746609 is an apocalyptic number.

It is an amenable number.

140746609 is a deficient number, since it is larger than the sum of its proper divisors (1).

140746609 is an equidigital number, since it uses as much as digits as its factorization.

140746609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 140746609 is about 11863.6676032330. The cubic root of 140746609 is about 520.1708129669.

The spelling of 140746609 in words is "one hundred forty million, seven hundred forty-six thousand, six hundred nine".