240749861 has 8 divisors (see below), whose sum is σ = 269734944. Its totient is φ = 212947920.

The previous prime is 240749857. The next prime is 240749891. The reversal of 240749861 is 168947042.

240749861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240749861 - 2² = 240749857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240749891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295355 + ... + 296168.

It is an arithmetic number, because the mean of its divisors is an integer number (33716868).

Almost surely, 2^240749861 is an apocalyptic number.

It is an amenable number.

240749861 is a deficient number, since it is larger than the sum of its proper divisors (28985083).

240749861 is a wasteful number, since it uses less digits than its factorization.

240749861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591571.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 240749861 is about 15516.1161699699. The cubic root of 240749861 is about 622.0930484274.

The spelling of 240749861 in words is "two hundred forty million, seven hundred forty-nine thousand, eight hundred sixty-one".