240966257 has 4 divisors (see below), whose sum is σ = 275390016. Its totient is φ = 206542500.

The previous prime is 240966251. The next prime is 240966283. The reversal of 240966257 is 752669042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240966257 - 2⁸ = 240966001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240966251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17211869 + ... + 17211882.

It is an arithmetic number, because the mean of its divisors is an integer number (68847504).

Almost surely, 2^240966257 is an apocalyptic number.

It is an amenable number.

240966257 is a deficient number, since it is larger than the sum of its proper divisors (34423759).

240966257 is an equidigital number, since it uses as much as digits as its factorization.

240966257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34423758.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 240966257 is about 15523.0878693641. The cubic root of 240966257 is about 622.2793803230.

The spelling of 240966257 in words is "two hundred forty million, nine hundred sixty-six thousand, two hundred fifty-seven".