687276827 has 2 divisors, whose sum is σ = 687276828. Its totient is φ = 687276826.

The previous prime is 687276787. The next prime is 687276841. The reversal of 687276827 is 728672786.

687276827 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 687276827 - 2¹⁰ = 687275803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687270827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343638413 + 343638414.

It is an arithmetic number, because the mean of its divisors is an integer number (343638414).

Almost surely, 2^687276827 is an apocalyptic number.

687276827 is a deficient number, since it is larger than the sum of its proper divisors (1).

687276827 is an equidigital number, since it uses as much as digits as its factorization.

687276827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 53.

The square root of 687276827 is about 26215.9651166994. The cubic root of 687276827 is about 882.4915730804.

The spelling of 687276827 in words is "six hundred eighty-seven million, two hundred seventy-six thousand, eight hundred twenty-seven".