140610649 has 2 divisors, whose sum is σ = 140610650. Its totient is φ = 140610648.

The previous prime is 140610641. The next prime is 140610667. The reversal of 140610649 is 946016041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117570649 + 23040000 = 10843^2 + 4800^2 .

It is a cyclic number.

It is not a de Polignac number, because 140610649 - 2³ = 140610641 is a prime.

It is a super-2 number, since 2×140610649² = 39542709224402402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140610649.

It is not a weakly prime, because it can be changed into another prime (140610641) 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, 70305324 + 70305325.

It is an arithmetic number, because the mean of its divisors is an integer number (70305325).

Almost surely, 2^140610649 is an apocalyptic number.

It is an amenable number.

140610649 is a deficient number, since it is larger than the sum of its proper divisors (1).

140610649 is an equidigital number, since it uses as much as digits as its factorization.

140610649 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 31.

The square root of 140610649 is about 11857.9361189037. The cubic root of 140610649 is about 520.0032655120.

The spelling of 140610649 in words is "one hundred forty million, six hundred ten thousand, six hundred forty-nine".