686887403 has 8 divisors (see below), whose sum is σ = 691945200. Its totient is φ = 681838560.

The previous prime is 686887349. The next prime is 686887427. The reversal of 686887403 is 304788686.

It is a happy number.

686887403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 686887403 - 2⁶ = 686887339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686887483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253148 + ... + 255846.

It is an arithmetic number, because the mean of its divisors is an integer number (86493150).

Almost surely, 2^686887403 is an apocalyptic number.

686887403 is a deficient number, since it is larger than the sum of its proper divisors (5057797).

686887403 is a wasteful number, since it uses less digits than its factorization.

686887403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 686887403 is about 26208.5368343981. The cubic root of 686887403 is about 882.3248628049.

The spelling of 686887403 in words is "six hundred eighty-six million, eight hundred eighty-seven thousand, four hundred three".