687873367 has 2 divisors, whose sum is σ = 687873368. Its totient is φ = 687873366.

The previous prime is 687873349. The next prime is 687873383. The reversal of 687873367 is 763378786.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687873367 - 2⁷ = 687873239 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687873317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343936683 + 343936684.

It is an arithmetic number, because the mean of its divisors is an integer number (343936684).

Almost surely, 2^687873367 is an apocalyptic number.

687873367 is a deficient number, since it is larger than the sum of its proper divisors (1).

687873367 is an equidigital number, since it uses as much as digits as its factorization.

687873367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 55.

The square root of 687873367 is about 26227.3400671894. The cubic root of 687873367 is about 882.7468265012.

The spelling of 687873367 in words is "six hundred eighty-seven million, eight hundred seventy-three thousand, three hundred sixty-seven".