671560 has 32 divisors (see below), whose sum is σ = 1535040. Its totient is φ = 264384.

The previous prime is 671557. The next prime is 671581. The reversal of 671560 is 65176.

671560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4039 + ... + 4201.

It is an arithmetic number, because the mean of its divisors is an integer number (47970).

2⁶⁷¹⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

671560 is an abundant number, since it is smaller than the sum of its proper divisors (863480).

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

671560 is a wasteful number, since it uses less digits than its factorization.

671560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 671560 is about 819.4876448123. The cubic root of 671560 is about 87.5712616753.

The spelling of 671560 in words is "six hundred seventy-one thousand, five hundred sixty".