671057 has 4 divisors (see below), whose sum is σ = 692736. Its totient is φ = 649380.

The previous prime is 671039. The next prime is 671059. The reversal of 671057 is 750176.

671057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671057 - 2¹⁸ = 408913 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671057.

It is not an unprimeable number, because it can be changed into a prime (671059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10793 + ... + 10854.

It is an arithmetic number, because the mean of its divisors is an integer number (173184).

2⁶⁷¹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

671057 is a deficient number, since it is larger than the sum of its proper divisors (21679).

671057 is a wasteful number, since it uses less digits than its factorization.

671057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21678.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 671057 is about 819.1806882489. The cubic root of 671057 is about 87.5493925215.

The spelling of 671057 in words is "six hundred seventy-one thousand, fifty-seven".