671874 has 32 divisors (see below), whose sum is σ = 1627776. Its totient is φ = 180480.

The previous prime is 671851. The next prime is 671887. The reversal of 671874 is 478176.

It is a plaindrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244 + ... + 1184.

It is an arithmetic number, because the mean of its divisors is an integer number (50868).

2⁶⁷¹⁸⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813888).

671874 is an abundant number, since it is smaller than the sum of its proper divisors (955902).

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

671874 is a wasteful number, since it uses less digits than its factorization.

671874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970.

The product of its digits is 9408, while the sum is 33.

The square root of 671874 is about 819.6792055432. The cubic root of 671874 is about 87.5849080566.

The spelling of 671874 in words is "six hundred seventy-one thousand, eight hundred seventy-four".