681467 has 4 divisors (see below), whose sum is σ = 711120. Its totient is φ = 651816.

The previous prime is 681451. The next prime is 681481. The reversal of 681467 is 764186.

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

It is a cyclic number.

It is not a de Polignac number, because 681467 - 2⁴ = 681451 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681467.

It is not an unprimeable number, because it can be changed into a prime (681407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14792 + ... + 14837.

It is an arithmetic number, because the mean of its divisors is an integer number (177780).

2⁶⁸¹⁴⁶⁷ is an apocalyptic number.

681467 is a deficient number, since it is larger than the sum of its proper divisors (29653).

681467 is a wasteful number, since it uses less digits than its factorization.

681467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29652.

The product of its digits is 8064, while the sum is 32.

The square root of 681467 is about 825.5101453041. The cubic root of 681467 is about 87.9997847791. Note that the first 3 decimals are identical.

The spelling of 681467 in words is "six hundred eighty-one thousand, four hundred sixty-seven".