671393 has 4 divisors (see below), whose sum is σ = 700608. Its totient is φ = 642180.

The previous prime is 671383. The next prime is 671401. The reversal of 671393 is 393176.

671393 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 a de Polignac number, because none of the positive numbers 2^k-671393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671303) 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, 14573 + ... + 14618.

It is an arithmetic number, because the mean of its divisors is an integer number (175152).

2⁶⁷¹³⁹³ is an apocalyptic number.

It is an amenable number.

671393 is a deficient number, since it is larger than the sum of its proper divisors (29215).

671393 is a wasteful number, since it uses less digits than its factorization.

671393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29214.

The product of its digits is 3402, while the sum is 29.

The square root of 671393 is about 819.3857455436. The cubic root of 671393 is about 87.5640021536.

The spelling of 671393 in words is "six hundred seventy-one thousand, three hundred ninety-three".