4240758661 has 2 divisors, whose sum is σ = 4240758662. Its totient is φ = 4240758660.

The previous prime is 4240758659. The next prime is 4240758667. The reversal of 4240758661 is 1668570424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3827896900 + 412861761 = 61870^2 + 20319^2 .

It is a cyclic number.

It is not a de Polignac number, because 4240758661 - 2¹ = 4240758659 is a prime.

Together with 4240758659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4240758667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120379330 + 2120379331.

It is an arithmetic number, because the mean of its divisors is an integer number (2120379331).

Almost surely, 2^4240758661 is an apocalyptic number.

It is an amenable number.

4240758661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4240758661 is an equidigital number, since it uses as much as digits as its factorization.

4240758661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 4240758661 is about 65121.1076456781. The cubic root of 4240758661 is about 1618.6309956670.

The spelling of 4240758661 in words is "four billion, two hundred forty million, seven hundred fifty-eight thousand, six hundred sixty-one".