671183321 has 4 divisors (see below), whose sum is σ = 675458532. Its totient is φ = 666908112.

The previous prime is 671183299. The next prime is 671183353. The reversal of 671183321 is 123381176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211295296 + 459888025 = 14536^2 + 21445^2 .

It is a cyclic number.

It is not a de Polignac number, because 671183321 - 2²² = 666989017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671185321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2137370 + ... + 2137683.

It is an arithmetic number, because the mean of its divisors is an integer number (168864633).

Almost surely, 2^671183321 is an apocalyptic number.

It is an amenable number.

671183321 is a deficient number, since it is larger than the sum of its proper divisors (4275211).

671183321 is a wasteful number, since it uses less digits than its factorization.

671183321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275210.

The product of its digits is 6048, while the sum is 32.

The square root of 671183321 is about 25907.2059666804. The cubic root of 671183321 is about 875.5488566292.

The spelling of 671183321 in words is "six hundred seventy-one million, one hundred eighty-three thousand, three hundred twenty-one".