683956687 has 4 divisors (see below), whose sum is σ = 684138960. Its totient is φ = 683774416.

The previous prime is 683956649. The next prime is 683956697. The reversal of 683956687 is 786659386.

683956687 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 683956687 - 2¹¹ = 683954639 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 (683956697) 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, 85387 + ... + 93052.

It is an arithmetic number, because the mean of its divisors is an integer number (171034740).

Almost surely, 2^683956687 is an apocalyptic number.

683956687 is a deficient number, since it is larger than the sum of its proper divisors (182273).

683956687 is a wasteful number, since it uses less digits than its factorization.

683956687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182272.

The product of its digits is 13063680, while the sum is 58.

The square root of 683956687 is about 26152.5655911614. The cubic root of 683956687 is about 881.0682133825.

The spelling of 683956687 in words is "six hundred eighty-three million, nine hundred fifty-six thousand, six hundred eighty-seven".