681675 has 24 divisors (see below), whose sum is σ = 1153200. Its totient is φ = 355200.

The previous prime is 681673. The next prime is 681677. The reversal of 681675 is 576186.

It is an interprime number because it is at equal distance from previous prime (681673) and next prime (681677).

It is not a de Polignac number, because 681675 - 2¹ = 681673 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (681673) 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 23 ways as a sum of consecutive naturals, for example, 4501 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (48050).

2⁶⁸¹⁶⁷⁵ is an apocalyptic number.

681675 is a deficient number, since it is larger than the sum of its proper divisors (471525).

681675 is a wasteful number, since it uses less digits than its factorization.

681675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 218 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 681675 is about 825.6361183960. The cubic root of 681675 is about 88.0087370802.

The spelling of 681675 in words is "six hundred eighty-one thousand, six hundred seventy-five".