863487767 has 2 divisors, whose sum is σ = 863487768. Its totient is φ = 863487766.

The previous prime is 863487721. The next prime is 863487769. The reversal of 863487767 is 767784368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 863487767 - 2¹⁴ = 863471383 is a prime.

It is a super-2 number, since 2×863487767² = 1491222247517292578, which contains 22 as substring.

Together with 863487769, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863487769) 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, 431743883 + 431743884.

It is an arithmetic number, because the mean of its divisors is an integer number (431743884).

Almost surely, 2^863487767 is an apocalyptic number.

863487767 is a deficient number, since it is larger than the sum of its proper divisors (1).

863487767 is an equidigital number, since it uses as much as digits as its factorization.

863487767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 56.

The square root of 863487767 is about 29385.1623613006. The cubic root of 863487767 is about 952.2523719343.

The spelling of 863487767 in words is "eight hundred sixty-three million, four hundred eighty-seven thousand, seven hundred sixty-seven".