671280 has 40 divisors (see below), whose sum is σ = 2081712. Its totient is φ = 178944.

The previous prime is 671269. The next prime is 671287. The reversal of 671280 is 82176.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 671280.

It is not an unprimeable number, because it can be changed into a prime (671287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1159 + ... + 1638.

2⁶⁷¹²⁸⁰ is an apocalyptic number.

671280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671280 is an abundant number, since it is smaller than the sum of its proper divisors (1410432).

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

671280 is a wasteful number, since it uses less digits than its factorization.

671280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 671280 is about 819.3167885501. The cubic root of 671280 is about 87.5590893393.

The spelling of 671280 in words is "six hundred seventy-one thousand, two hundred eighty".