240671857 has 2 divisors, whose sum is σ = 240671858. Its totient is φ = 240671856.

The previous prime is 240671843. The next prime is 240671861. The reversal of 240671857 is 758176042.

240671857 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 can be written as a sum of positive squares in only one way, i.e., 208398096 + 32273761 = 14436^2 + 5681^2 .

It is a cyclic number.

It is not a de Polignac number, because 240671857 - 2¹¹ = 240669809 is a prime.

It is not a weakly prime, because it can be changed into another prime (240671867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120335928 + 120335929.

It is an arithmetic number, because the mean of its divisors is an integer number (120335929).

Almost surely, 2^240671857 is an apocalyptic number.

It is an amenable number.

240671857 is a deficient number, since it is larger than the sum of its proper divisors (1).

240671857 is an equidigital number, since it uses as much as digits as its factorization.

240671857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 240671857 is about 15513.6023218336. The cubic root of 240671857 is about 622.0258542204.

The spelling of 240671857 in words is "two hundred forty million, six hundred seventy-one thousand, eight hundred fifty-seven".