671726304 has 384 divisors, whose sum is σ = 2286144000. Its totient is φ = 190439424.

The previous prime is 671726273. The next prime is 671726311. The reversal of 671726304 is 403627176.

671726304 is a `hidden beast` number, since 6 + 7 + 17 + 2 + 630 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8093047 + ... + 8093129.

It is an arithmetic number, because the mean of its divisors is an integer number (5953500).

Almost surely, 2^671726304 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 671726304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143072000).

671726304 is an abundant number, since it is smaller than the sum of its proper divisors (1614417696).

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

671726304 is a wasteful number, since it uses less digits than its factorization.

671726304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 671726304 is about 25917.6832297951. The cubic root of 671726304 is about 875.7848974578.

The spelling of 671726304 in words is "six hundred seventy-one million, seven hundred twenty-six thousand, three hundred four".