671894496 has 288 divisors, whose sum is σ = 2430425088. Its totient is φ = 171279360.

The previous prime is 671894471. The next prime is 671894539. The reversal of 671894496 is 694498176.

671894496 is a `hidden beast` number, since 6 + 71 + 89 + 4 + 496 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 812035 + ... + 812861.

It is an arithmetic number, because the mean of its divisors is an integer number (8438976).

Almost surely, 2^671894496 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 671894496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215212544).

671894496 is an abundant number, since it is smaller than the sum of its proper divisors (1758530592).

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

671894496 is a wasteful number, since it uses less digits than its factorization.

671894496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 883 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 671894496 is about 25920.9277611740. The cubic root of 671894496 is about 875.8579866115.

The spelling of 671894496 in words is "six hundred seventy-one million, eight hundred ninety-four thousand, four hundred ninety-six".