671324590336 has 81 divisors (see below), whose sum is σ = 1374608126703. Its totient is φ = 327213219840.

The previous prime is 671324590319. The next prime is 671324590337. The reversal of 671324590336 is 633095423176.

The square root of 671324590336 is 819344.

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 249344430336 + 421980160000 = 499344^2 + 649600^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671324590336.

It is not an unprimeable number, because it can be changed into a prime (671324590337) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 537489040 + ... + 537490288.

Almost surely, 2^671324590336 is an apocalyptic number.

671324590336 is the 819344-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671324590336

671324590336 is an abundant number, since it is smaller than the sum of its proper divisors (703283536367).

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

671324590336 is an frugal number, since it uses more digits than its factorization.

671324590336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 49.

Multiplying 671324590336 by its sum of digits (49), we get a square (32894904926464 = 5735408²).

The spelling of 671324590336 in words is "six hundred seventy-one billion, three hundred twenty-four million, five hundred ninety thousand, three hundred thirty-six".