686229047 has 24 divisors (see below), whose sum is σ = 815159520. Its totient is φ = 565833600.

The previous prime is 686229043. The next prime is 686229053. The reversal of 686229047 is 740922686.

686229047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686229047 - 2² = 686229043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 686228989 and 686229007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686229041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 967529 + ... + 968237.

It is an arithmetic number, because the mean of its divisors is an integer number (33964980).

Almost surely, 2^686229047 is an apocalyptic number.

686229047 is a deficient number, since it is larger than the sum of its proper divisors (128930473).

686229047 is a wasteful number, since it uses less digits than its factorization.

686229047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 686229047 is about 26195.9738700435. The cubic root of 686229047 is about 882.0428808532.

The spelling of 686229047 in words is "six hundred eighty-six million, two hundred twenty-nine thousand, forty-seven".