671095 has 4 divisors (see below), whose sum is σ = 805320. Its totient is φ = 536872.

The previous prime is 671093. The next prime is 671123. The reversal of 671095 is 590176.

It is a happy number.

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 671095 - 2¹ = 671093 is a prime.

It is a congruent 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67105 + ... + 67114.

It is an arithmetic number, because the mean of its divisors is an integer number (201330).

2⁶⁷¹⁰⁹⁵ is an apocalyptic number.

671095 is a deficient number, since it is larger than the sum of its proper divisors (134225).

671095 is a wasteful number, since it uses less digits than its factorization.

671095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134224.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 671095 is about 819.2038818267. The cubic root of 671095 is about 87.5510450459.

The spelling of 671095 in words is "six hundred seventy-one thousand, ninety-five".