671722280 has 32 divisors (see below), whose sum is σ = 1516976640. Its totient is φ = 267693120.

The previous prime is 671722277. The next prime is 671722327. The reversal of 671722280 is 82227176.

It is a self number, because there is not a number n which added to its sum of digits gives 671722280.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20144 + ... + 41823.

It is an arithmetic number, because the mean of its divisors is an integer number (47405520).

Almost surely, 2^671722280 is an apocalyptic number.

It is an amenable number.

671722280 is an abundant number, since it is smaller than the sum of its proper divisors (845254360).

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

671722280 is a wasteful number, since it uses less digits than its factorization.

671722280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62249 (or 62245 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 671722280 is about 25917.6055992833. The cubic root of 671722280 is about 875.7831486476.

The spelling of 671722280 in words is "six hundred seventy-one million, seven hundred twenty-two thousand, two hundred eighty".