671086 has 16 divisors (see below), whose sum is σ = 1106784. Its totient is φ = 303264.

The previous prime is 671081. The next prime is 671087. The reversal of 671086 is 680176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671081) 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, 1135 + ... + 1621.

It is an arithmetic number, because the mean of its divisors is an integer number (69174).

2⁶⁷¹⁰⁸⁶ is an apocalyptic number.

671086 is a deficient number, since it is larger than the sum of its proper divisors (435698).

671086 is a wasteful number, since it uses less digits than its factorization.

671086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 671086 is about 819.1983886703. The cubic root of 671086 is about 87.5506536642.

The spelling of 671086 in words is "six hundred seventy-one thousand, eighty-six".