240202661 has 2 divisors, whose sum is σ = 240202662. Its totient is φ = 240202660.

The previous prime is 240202657. The next prime is 240202681. The reversal of 240202661 is 166202042.

240202661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224250625 + 15952036 = 14975^2 + 3994^2 .

It is a cyclic number.

It is not a de Polignac number, because 240202661 - 2² = 240202657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240202681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120101330 + 120101331.

It is an arithmetic number, because the mean of its divisors is an integer number (120101331).

Almost surely, 2^240202661 is an apocalyptic number.

It is an amenable number.

240202661 is a deficient number, since it is larger than the sum of its proper divisors (1).

240202661 is an equidigital number, since it uses as much as digits as its factorization.

240202661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 240202661 is about 15498.4728602530. The cubic root of 240202661 is about 621.6213727691.

The spelling of 240202661 in words is "two hundred forty million, two hundred two thousand, six hundred sixty-one".