671628339 has 24 divisors (see below), whose sum is σ = 996559200. Its totient is φ = 435615360.

The previous prime is 671628319. The next prime is 671628379. The reversal of 671628339 is 933826176.

It is not a de Polignac number, because 671628339 - 2¹² = 671624243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671628294 and 671628303.

It is not an unprimeable number, because it can be changed into a prime (671628319) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 141202 + ... + 145880.

It is an arithmetic number, because the mean of its divisors is an integer number (41523300).

Almost surely, 2^671628339 is an apocalyptic number.

671628339 is a deficient number, since it is larger than the sum of its proper divisors (324930861).

671628339 is a wasteful number, since it uses less digits than its factorization.

671628339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115 (or 5112 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 671628339 is about 25915.7932350141. The cubic root of 671628339 is about 875.7423203754.

The spelling of 671628339 in words is "six hundred seventy-one million, six hundred twenty-eight thousand, three hundred thirty-nine".