687054227 has 2 divisors, whose sum is σ = 687054228. Its totient is φ = 687054226.

The previous prime is 687054161. The next prime is 687054253. The reversal of 687054227 is 722450786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687054227 - 2⁸ = 687053971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687054287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343527113 + 343527114.

It is an arithmetic number, because the mean of its divisors is an integer number (343527114).

Almost surely, 2^687054227 is an apocalyptic number.

687054227 is a deficient number, since it is larger than the sum of its proper divisors (1).

687054227 is an equidigital number, since it uses as much as digits as its factorization.

687054227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 687054227 is about 26211.7192682968. The cubic root of 687054227 is about 882.3962869556.

The spelling of 687054227 in words is "six hundred eighty-seven million, fifty-four thousand, two hundred twenty-seven".