671211489 has 16 divisors (see below), whose sum is σ = 964332992. Its totient is φ = 412820928.

The previous prime is 671211481. The next prime is 671211503. The reversal of 671211489 is 984112176.

It is not a de Polignac number, because 671211489 - 2³ = 671211481 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671211481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87867 + ... + 95199.

It is an arithmetic number, because the mean of its divisors is an integer number (60270812).

Almost surely, 2^671211489 is an apocalyptic number.

It is an amenable number.

671211489 is a deficient number, since it is larger than the sum of its proper divisors (293121503).

671211489 is a wasteful number, since it uses less digits than its factorization.

671211489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9696.

The product of its digits is 24192, while the sum is 39.

The square root of 671211489 is about 25907.7495935097. The cubic root of 671211489 is about 875.5611047063.

The spelling of 671211489 in words is "six hundred seventy-one million, two hundred eleven thousand, four hundred eighty-nine".