2240687857 has 4 divisors (see below), whose sum is σ = 2250063360. Its totient is φ = 2231312356.

The previous prime is 2240687851. The next prime is 2240687863. The reversal of 2240687857 is 7587860422.

2240687857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (2240687851) and next prime (2240687863).

It is a cyclic number.

It is not a de Polignac number, because 2240687857 - 2²³ = 2232299249 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2240687857.

It is not an unprimeable number, because it can be changed into a prime (2240687851) 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, 4687393 + ... + 4687870.

It is an arithmetic number, because the mean of its divisors is an integer number (562515840).

Almost surely, 2^2240687857 is an apocalyptic number.

It is an amenable number.

2240687857 is a deficient number, since it is larger than the sum of its proper divisors (9375503).

2240687857 is an equidigital number, since it uses as much as digits as its factorization.

2240687857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375502.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 2240687857 is about 47335.9045228883. The cubic root of 2240687857 is about 1308.5604404794.

The spelling of 2240687857 in words is "two billion, two hundred forty million, six hundred eighty-seven thousand, eight hundred fifty-seven".