681358 has 8 divisors (see below), whose sum is σ = 1025640. Its totient is φ = 339480.

The previous prime is 681341. The next prime is 681361. The reversal of 681358 is 853186.

681358 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

681358 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 3 ways as a sum of consecutive naturals, for example, 553 + ... + 1291.

It is an arithmetic number, because the mean of its divisors is an integer number (128205).

2⁶⁸¹³⁵⁸ is an apocalyptic number.

681358 is a deficient number, since it is larger than the sum of its proper divisors (344282).

681358 is a wasteful number, since it uses less digits than its factorization.

681358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202.

The product of its digits is 5760, while the sum is 31.

The square root of 681358 is about 825.4441228817. Note that the first 3 decimals coincide. The cubic root of 681358 is about 87.9950927016.

The spelling of 681358 in words is "six hundred eighty-one thousand, three hundred fifty-eight".