681155 has 8 divisors (see below), whose sum is σ = 831600. Its totient is φ = 535456.
The previous prime is 681151. The next prime is 681167. The reversal of 681155 is 551186.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 681155 - 22 = 681151 is a prime.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681155.
It is not an unprimeable number, because it can be changed into a prime (681151) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860 + ... + 1449.
It is an arithmetic number, because the mean of its divisors is an integer number (103950).
2681155 is an apocalyptic number.
681155 is a deficient number, since it is larger than the sum of its proper divisors (150445).
681155 is a wasteful number, since it uses less digits than its factorization.
681155 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2373.
The product of its digits is 1200, while the sum is 26.
The square root of 681155 is about 825.3211496139. The cubic root of 681155 is about 87.9863529113.
The spelling of 681155 in words is "six hundred eighty-one thousand, one hundred fifty-five".
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