671960 has 32 divisors (see below), whose sum is σ = 1535760. Its totient is φ = 264576.

The previous prime is 671947. The next prime is 671969. The reversal of 671960 is 69176.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671969) by changing a digit.

671960 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 4202 + ... + 4358.

2⁶⁷¹⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

671960 is an abundant number, since it is smaller than the sum of its proper divisors (863800).

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

671960 is a wasteful number, since it uses less digits than its factorization.

671960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 671960 is about 819.7316634119. The cubic root of 671960 is about 87.5886448589.

The spelling of 671960 in words is "six hundred seventy-one thousand, nine hundred sixty".