245640611 has 2 divisors, whose sum is σ = 245640612. Its totient is φ = 245640610.

The previous prime is 245640601. The next prime is 245640613. The reversal of 245640611 is 116046542.

245640611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245640611 - 2¹⁰ = 245639587 is a prime.

Together with 245640613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245640613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122820305 + 122820306.

It is an arithmetic number, because the mean of its divisors is an integer number (122820306).

Almost surely, 2^245640611 is an apocalyptic number.

245640611 is a deficient number, since it is larger than the sum of its proper divisors (1).

245640611 is an equidigital number, since it uses as much as digits as its factorization.

245640611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 245640611 is about 15672.9260509963. The cubic root of 245640611 is about 626.2773755734.

The spelling of 245640611 in words is "two hundred forty-five million, six hundred forty thousand, six hundred eleven".