671451 has 8 divisors (see below), whose sum is σ = 976704. Its totient is φ = 406920.

The previous prime is 671443. The next prime is 671467. The reversal of 671451 is 154176.

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

It is not a de Polignac number, because 671451 - 2³ = 671443 is a prime.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671451.

It is not an unprimeable number, because it can be changed into a prime (671401) 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 7 ways as a sum of consecutive naturals, for example, 10141 + ... + 10206.

It is an arithmetic number, because the mean of its divisors is an integer number (122088).

2⁶⁷¹⁴⁵¹ is an apocalyptic number.

671451 is a deficient number, since it is larger than the sum of its proper divisors (305253).

671451 is a wasteful number, since it uses less digits than its factorization.

671451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20361.

The product of its digits is 840, while the sum is 24.

The square root of 671451 is about 819.4211371450. The cubic root of 671451 is about 87.5665235610.

The spelling of 671451 in words is "six hundred seventy-one thousand, four hundred fifty-one".