240577691 has 2 divisors, whose sum is σ = 240577692. Its totient is φ = 240577690.

The previous prime is 240577669. The next prime is 240577697. The reversal of 240577691 is 196775042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240577691 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240577697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120288845 + 120288846.

It is an arithmetic number, because the mean of its divisors is an integer number (120288846).

Almost surely, 2^240577691 is an apocalyptic number.

240577691 is a deficient number, since it is larger than the sum of its proper divisors (1).

240577691 is an equidigital number, since it uses as much as digits as its factorization.

240577691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 240577691 is about 15510.5670753844. The cubic root of 240577691 is about 621.9447183976.

The spelling of 240577691 in words is "two hundred forty million, five hundred seventy-seven thousand, six hundred ninety-one".