260440237 has 2 divisors, whose sum is σ = 260440238. Its totient is φ = 260440236.

The previous prime is 260440199. The next prime is 260440261. The reversal of 260440237 is 732044062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212401476 + 48038761 = 14574^2 + 6931^2 .

It is a cyclic number.

It is not a de Polignac number, because 260440237 - 2²³ = 252051629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260440267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130220118 + 130220119.

It is an arithmetic number, because the mean of its divisors is an integer number (130220119).

Almost surely, 2^260440237 is an apocalyptic number.

It is an amenable number.

260440237 is a deficient number, since it is larger than the sum of its proper divisors (1).

260440237 is an equidigital number, since it uses as much as digits as its factorization.

260440237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 260440237 is about 16138.1608927412. The cubic root of 260440237 is about 638.6104593934.

Adding to 260440237 its reverse (732044062), we get a palindrome (992484299).

The spelling of 260440237 in words is "two hundred sixty million, four hundred forty thousand, two hundred thirty-seven".