681336 has 24 divisors (see below), whose sum is σ = 1845480. Its totient is φ = 227088.

The previous prime is 681311. The next prime is 681337. The reversal of 681336 is 633186.

681336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 (681337) by changing a digit.

681336 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4660 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (76895).

2⁶⁸¹³³⁶ is an apocalyptic number.

It is an amenable number.

681336 is an abundant number, since it is smaller than the sum of its proper divisors (1164144).

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

681336 is a wasteful number, since it uses less digits than its factorization.

681336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9475 (or 9468 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 681336 is about 825.4307966147. The cubic root of 681336 is about 87.9941456160.

The spelling of 681336 in words is "six hundred eighty-one thousand, three hundred thirty-six".