671090 has 16 divisors (see below), whose sum is σ = 1380672. Its totient is φ = 230064.

The previous prime is 671087. The next prime is 671093. The reversal of 671090 is 90176.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (671087) and next prime (671093).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (671093) 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 7 ways as a sum of consecutive naturals, for example, 4724 + ... + 4863.

It is an arithmetic number, because the mean of its divisors is an integer number (86292).

2⁶⁷¹⁰⁹⁰ is an apocalyptic number.

671090 is an abundant number, since it is smaller than the sum of its proper divisors (709582).

It is a weird number, because it is abundant, but not a pseudoperfect number.

671090 is a wasteful number, since it uses less digits than its factorization.

671090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9601.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 671090 is about 819.2008300777. The cubic root of 671090 is about 87.5508276120.

The spelling of 671090 in words is "six hundred seventy-one thousand, ninety".