681474 has 16 divisors (see below), whose sum is σ = 1389312. Its totient is φ = 222768.

The previous prime is 681451. The next prime is 681481. The reversal of 681474 is 474186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754 + ... + 1389.

It is an arithmetic number, because the mean of its divisors is an integer number (86832).

2⁶⁸¹⁴⁷⁴ is an apocalyptic number.

681474 is an abundant number, since it is smaller than the sum of its proper divisors (707838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681474 is a wasteful number, since it uses less digits than its factorization.

681474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201.

The product of its digits is 5376, while the sum is 30.

The square root of 681474 is about 825.5143850957. The cubic root of 681474 is about 88.0000860881. Note that the first 4 decimals are identical.

The spelling of 681474 in words is "six hundred eighty-one thousand, four hundred seventy-four".