260776487 has 2 divisors, whose sum is σ = 260776488. Its totient is φ = 260776486.

The previous prime is 260776459. The next prime is 260776499. The reversal of 260776487 is 784677062.

260776487 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 is a cyclic number.

It is not a de Polignac number, because 260776487 - 2¹⁴ = 260760103 is a prime.

It is a super-2 number, since 2×260776487² = 136008752344122338, 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 (260776427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130388243 + 130388244.

It is an arithmetic number, because the mean of its divisors is an integer number (130388244).

Almost surely, 2^260776487 is an apocalyptic number.

260776487 is a deficient number, since it is larger than the sum of its proper divisors (1).

260776487 is an equidigital number, since it uses as much as digits as its factorization.

260776487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 260776487 is about 16148.5753860828. The cubic root of 260776487 is about 638.8851742673.

The spelling of 260776487 in words is "two hundred sixty million, seven hundred seventy-six thousand, four hundred eighty-seven".