260406247 has 2 divisors, whose sum is σ = 260406248. Its totient is φ = 260406246.

The previous prime is 260406241. The next prime is 260406271. The reversal of 260406247 is 742604062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260406247 - 2³ = 260406239 is a prime.

It is a super-2 number, since 2×260406247² = 135622826953250018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260406241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130203123 + 130203124.

It is an arithmetic number, because the mean of its divisors is an integer number (130203124).

Almost surely, 2^260406247 is an apocalyptic number.

260406247 is a deficient number, since it is larger than the sum of its proper divisors (1).

260406247 is an equidigital number, since it uses as much as digits as its factorization.

260406247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 260406247 is about 16137.1077644044. The cubic root of 260406247 is about 638.5826765463.

The spelling of 260406247 in words is "two hundred sixty million, four hundred six thousand, two hundred forty-seven".