671574456 has 256 divisors, whose sum is σ = 2276736000. Its totient is φ = 179159040.

The previous prime is 671574427. The next prime is 671574557. The reversal of 671574456 is 654475176.

671574456 is a `hidden beast` number, since 6 + 71 + 574 + 4 + 5 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2786496 + ... + 2786736.

It is an arithmetic number, because the mean of its divisors is an integer number (8893500).

Almost surely, 2^671574456 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 671574456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138368000).

671574456 is an abundant number, since it is smaller than the sum of its proper divisors (1605161544).

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

671574456 is a wasteful number, since it uses less digits than its factorization.

671574456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 369 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 671574456 is about 25914.7536357188. The cubic root of 671574456 is about 875.7189002372.

The spelling of 671574456 in words is "six hundred seventy-one million, five hundred seventy-four thousand, four hundred fifty-six".