671938 has 8 divisors (see below), whose sum is σ = 1013760. Its totient is φ = 334020.

The previous prime is 671933. The next prime is 671939. The reversal of 671938 is 839176.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671933) 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, 498 + ... + 1261.

It is an arithmetic number, because the mean of its divisors is an integer number (126720).

2⁶⁷¹⁹³⁸ is an apocalyptic number.

671938 is a deficient number, since it is larger than the sum of its proper divisors (341822).

671938 is a wasteful number, since it uses less digits than its factorization.

671938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952.

The product of its digits is 9072, while the sum is 34.

The square root of 671938 is about 819.7182442767. The cubic root of 671938 is about 87.5876889631.

The spelling of 671938 in words is "six hundred seventy-one thousand, nine hundred thirty-eight".