686132832 has 96 divisors (see below), whose sum is σ = 2245549824. Its totient is φ = 178214400.

The previous prime is 686132831. The next prime is 686132833. The reversal of 686132832 is 238231686.

It is an interprime number because it is at equal distance from previous prime (686132831) and next prime (686132833).

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686132831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39019 + ... + 53802.

It is an arithmetic number, because the mean of its divisors is an integer number (23391144).

Almost surely, 2^686132832 is an apocalyptic number.

It is an amenable number.

686132832 is an abundant number, since it is smaller than the sum of its proper divisors (1559416992).

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

686132832 is a wasteful number, since it uses less digits than its factorization.

686132832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92852 (or 92844 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 686132832 is about 26194.1373593405. The cubic root of 686132832 is about 882.0016556856.

It can be divided in two parts, 6861 and 32832, that added together give a palindrome (39693).

The spelling of 686132832 in words is "six hundred eighty-six million, one hundred thirty-two thousand, eight hundred thirty-two".