671900 has 18 divisors (see below), whose sum is σ = 1458240. Its totient is φ = 268720.

The previous prime is 671893. The next prime is 671903. The reversal of 671900 is 9176.

It is a happy number.

It is a super-2 number, since 2×671900² = 902899220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3260 + ... + 3459.

2⁶⁷¹⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

671900 is an abundant number, since it is smaller than the sum of its proper divisors (786340).

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

671900 is a wasteful number, since it uses less digits than its factorization.

671900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733 (or 6726 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 671900 is about 819.6950652529. The cubic root of 671900 is about 87.5860378212.

The spelling of 671900 in words is "six hundred seventy-one thousand, nine hundred".