671559 has 16 divisors (see below), whose sum is σ = 1036032. Its totient is φ = 379008.

The previous prime is 671557. The next prime is 671581. The reversal of 671559 is 955176.

It is not a de Polignac number, because 671559 - 2¹ = 671557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2232 + ... + 2514.

It is an arithmetic number, because the mean of its divisors is an integer number (64752).

2⁶⁷¹⁵⁵⁹ is an apocalyptic number.

671559 is a deficient number, since it is larger than the sum of its proper divisors (364473).

671559 is a wasteful number, since it uses less digits than its factorization.

671559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its digits is 9450, while the sum is 33.

The square root of 671559 is about 819.4870346747. The cubic root of 671559 is about 87.5712182087.

The spelling of 671559 in words is "six hundred seventy-one thousand, five hundred fifty-nine".