686033712 has 360 divisors, whose sum is σ = 2503287696. Its totient is φ = 180278784.

The previous prime is 686033707. The next prime is 686033717. The reversal of 686033712 is 217330686.

It is a happy number.

686033712 is a `hidden beast` number, since 6 + 8 + 603 + 37 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (686033707) and next prime (686033717).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (686033717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2476518 + ... + 2476794.

Almost surely, 2^686033712 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 686033712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251643848).

686033712 is an abundant number, since it is smaller than the sum of its proper divisors (1817253984).

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

686033712 is a wasteful number, since it uses less digits than its factorization.

686033712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 686033712 is about 26192.2452645817. The cubic root of 686033712 is about 881.9591817845.

The spelling of 686033712 in words is "six hundred eighty-six million, thirty-three thousand, seven hundred twelve".