671403 has 8 divisors (see below), whose sum is σ = 942400. Its totient is φ = 424008.

The previous prime is 671401. The next prime is 671417. The reversal of 671403 is 304176.

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

It is not a de Polignac number, because 671403 - 2¹ = 671401 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 671403.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671403.

It is not an unprimeable number, because it can be changed into a prime (671401) 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, 5833 + ... + 5946.

It is an arithmetic number, because the mean of its divisors is an integer number (117800).

2⁶⁷¹⁴⁰³ is an apocalyptic number.

671403 is a deficient number, since it is larger than the sum of its proper divisors (270997).

671403 is a wasteful number, since it uses less digits than its factorization.

671403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11801.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 671403 is about 819.3918476529. The cubic root of 671403 is about 87.5644368894.

Adding to 671403 its reverse (304176), we get a palindrome (975579).

The spelling of 671403 in words is "six hundred seventy-one thousand, four hundred three".