687873267 has 6 divisors (see below), whose sum is σ = 993594732. Its totient is φ = 458582172.

The previous prime is 687873239. The next prime is 687873287. The reversal of 687873267 is 762378786.

It is not a de Polignac number, because 687873267 - 2⁷ = 687873139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687873287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38215173 + ... + 38215190.

It is an arithmetic number, because the mean of its divisors is an integer number (165599122).

Almost surely, 2^687873267 is an apocalyptic number.

687873267 is a deficient number, since it is larger than the sum of its proper divisors (305721465).

687873267 is a wasteful number, since it uses less digits than its factorization.

687873267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76430369 (or 76430366 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 687873267 is about 26227.3381607818. The cubic root of 687873267 is about 882.7467837246.

The spelling of 687873267 in words is "six hundred eighty-seven million, eight hundred seventy-three thousand, two hundred sixty-seven".