671314758244 has 27 divisors (see below), whose sum is σ = 1272161974923. Its totient is φ = 309827748672.

The previous prime is 671314758241. The next prime is 671314758269. The reversal of 671314758244 is 442857413176.

The square root of 671314758244 is 819338.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 552289758244 + 119025000000 = 743162^2 + 345000^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671314758191 and 671314758200.

It is not an unprimeable number, because it can be changed into a prime (671314758241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21287032 + ... + 21318544.

Almost surely, 2^671314758244 is an apocalyptic number.

671314758244 is the 819338-th square number.

It is an amenable number.

671314758244 is a deficient number, since it is larger than the sum of its proper divisors (600847216679).

671314758244 is an frugal number, since it uses more digits than its factorization.

671314758244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63056 (or 31528 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 52.

The spelling of 671314758244 in words is "six hundred seventy-one billion, three hundred fourteen million, seven hundred fifty-eight thousand, two hundred forty-four".