671573 has 8 divisors (see below), whose sum is σ = 772992. Its totient is φ = 571536.

The previous prime is 671557. The next prime is 671581. The reversal of 671573 is 375176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671573 - 2⁴ = 671557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671533) 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, 1136 + ... + 1622.

It is an arithmetic number, because the mean of its divisors is an integer number (96624).

2⁶⁷¹⁵⁷³ is an apocalyptic number.

It is an amenable number.

671573 is a deficient number, since it is larger than the sum of its proper divisors (101419).

671573 is a wasteful number, since it uses less digits than its factorization.

671573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 4410, while the sum is 29.

The square root of 671573 is about 819.4955765591. The cubic root of 671573 is about 87.5718267372.

It can be divided in two parts, 671 and 573, that multiplied together give a palindrome (384483).

The spelling of 671573 in words is "six hundred seventy-one thousand, five hundred seventy-three".