671819936 has 48 divisors (see below), whose sum is σ = 1400263200. Its totient is φ = 316401408.

The previous prime is 671819933. The next prime is 671819959. The reversal of 671819936 is 639918176.

It is not an unprimeable number, because it can be changed into a prime (671819933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105746 + ... + 111918.

It is an arithmetic number, because the mean of its divisors is an integer number (29172150).

Almost surely, 2^671819936 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 671819936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700131600).

671819936 is an abundant number, since it is smaller than the sum of its proper divisors (728443264).

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

671819936 is a wasteful number, since it uses less digits than its factorization.

671819936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6381 (or 6373 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The square root of 671819936 is about 25919.4895011457. The cubic root of 671819936 is about 875.8255874835.

The spelling of 671819936 in words is "six hundred seventy-one million, eight hundred nineteen thousand, nine hundred thirty-six".