671394 has 16 divisors (see below), whose sum is σ = 1353600. Its totient is φ = 222000.

The previous prime is 671383. The next prime is 671401. The reversal of 671394 is 493176.

It is a happy number.

671394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671394.

It is an unprimeable number.

671394 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (84600).

2⁶⁷¹³⁹⁴ is an apocalyptic number.

671394 is an abundant number, since it is smaller than the sum of its proper divisors (682206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671394 is a wasteful number, since it uses less digits than its factorization.

671394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905.

The product of its digits is 4536, while the sum is 30.

The square root of 671394 is about 819.3863557566. The cubic root of 671394 is about 87.5640456274.

The spelling of 671394 in words is "six hundred seventy-one thousand, three hundred ninety-four".