140783761 has 2 divisors, whose sum is σ = 140783762. Its totient is φ = 140783760.

The previous prime is 140783737. The next prime is 140783789. The reversal of 140783761 is 167387041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88943761 + 51840000 = 9431^2 + 7200^2 .

It is a cyclic number.

It is not a de Polignac number, because 140783761 - 2²⁷ = 6566033 is a prime.

It is a super-2 number, since 2×140783761² = 39640134722610242, 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 140783761.

It is not a weakly prime, because it can be changed into another prime (140793761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70391880 + 70391881.

It is an arithmetic number, because the mean of its divisors is an integer number (70391881).

Almost surely, 2^140783761 is an apocalyptic number.

It is an amenable number.

140783761 is a deficient number, since it is larger than the sum of its proper divisors (1).

140783761 is an equidigital number, since it uses as much as digits as its factorization.

140783761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 140783761 is about 11865.2332888991. The cubic root of 140783761 is about 520.2165776832.

The spelling of 140783761 in words is "one hundred forty million, seven hundred eighty-three thousand, seven hundred sixty-one".