671943468 has 54 divisors (see below), whose sum is σ = 1825554276. Its totient is φ = 191804256.

The previous prime is 671943451. The next prime is 671943529. The reversal of 671943468 is 864349176.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 628038 + ... + 629106.

Almost surely, 2^671943468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671943468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912777138).

671943468 is an abundant number, since it is smaller than the sum of its proper divisors (1153610808).

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

671943468 is a wasteful number, since it uses less digits than its factorization.

671943468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159 (or 1081 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 671943468 is about 25921.8723860758. The cubic root of 671943468 is about 875.8792654856.

Multiplying 671943468 by its sum of digits (48), we get a square (32253286464 = 179592²).

The spelling of 671943468 in words is "six hundred seventy-one million, nine hundred forty-three thousand, four hundred sixty-eight".