681202 has 4 divisors (see below), whose sum is σ = 1021806. Its totient is φ = 340600.

The previous prime is 681179. The next prime is 681221. The reversal of 681202 is 202186.

It is a happy number.

681202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 641601 + 39601 = 801^2 + 199^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 681202.

It is an unprimeable number.

681202 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 as a sum of consecutive naturals, namely, 170299 + ... + 170302.

2⁶⁸¹²⁰² is an apocalyptic number.

681202 is a deficient number, since it is larger than the sum of its proper divisors (340604).

681202 is a wasteful number, since it uses less digits than its factorization.

681202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340603.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 681202 is about 825.3496228872. The cubic root of 681202 is about 87.9883765640.

Adding to 681202 its reverse (202186), we get a palindrome (883388).

The spelling of 681202 in words is "six hundred eighty-one thousand, two hundred two".