671583 has 16 divisors (see below), whose sum is σ = 999936. Its totient is φ = 397440.

The previous prime is 671581. The next prime is 671591. The reversal of 671583 is 385176.

It is not a de Polignac number, because 671583 - 2¹ = 671581 is a prime.

671583 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 671583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671581) 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, 1335 + ... + 1767.

It is an arithmetic number, because the mean of its divisors is an integer number (62496).

2⁶⁷¹⁵⁸³ is an apocalyptic number.

671583 is a deficient number, since it is larger than the sum of its proper divisors (328353).

671583 is a wasteful number, since it uses less digits than its factorization.

671583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its digits is 5040, while the sum is 30.

The square root of 671583 is about 819.5016778506. The cubic root of 671583 is about 87.5722613953.

It can be divided in two parts, 67158 and 3, that added together give a triangular number (67161 = T₃₆₆).

The spelling of 671583 in words is "six hundred seventy-one thousand, five hundred eighty-three".