686354032 has 80 divisors (see below), whose sum is σ = 1641492160. Its totient is φ = 270729216.

The previous prime is 686354029. The next prime is 686354057. The reversal of 686354032 is 230453686.

686354032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 686353982 and 686354000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892144 + ... + 892912.

It is an arithmetic number, because the mean of its divisors is an integer number (20518652).

Almost surely, 2^686354032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686354032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820746080).

686354032 is an abundant number, since it is smaller than the sum of its proper divisors (955138128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686354032 is a wasteful number, since it uses less digits than its factorization.

686354032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 686354032 is about 26198.3593379433. The cubic root of 686354032 is about 882.0964273271.

The spelling of 686354032 in words is "six hundred eighty-six million, three hundred fifty-four thousand, thirty-two".