687973367 has 4 divisors (see below), whose sum is σ = 692093136. Its totient is φ = 683853600.

The previous prime is 687973343. The next prime is 687973381. The reversal of 687973367 is 763379786.

687973367 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 687973367 - 2⁶ = 687973303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687973327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2059634 + ... + 2059967.

It is an arithmetic number, because the mean of its divisors is an integer number (173023284).

Almost surely, 2^687973367 is an apocalyptic number.

687973367 is a deficient number, since it is larger than the sum of its proper divisors (4119769).

687973367 is a wasteful number, since it uses less digits than its factorization.

687973367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119768.

The product of its digits is 8001504, while the sum is 56.

The square root of 687973367 is about 26229.2464054917. The cubic root of 687973367 is about 882.7896010435.

The spelling of 687973367 in words is "six hundred eighty-seven million, nine hundred seventy-three thousand, three hundred sixty-seven".