671741824 has 64 divisors (see below), whose sum is σ = 1445850000. Its totient is φ = 309030912.

The previous prime is 671741803. The next prime is 671741831. The reversal of 671741824 is 428147176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×671741824² = 902474156221693952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829932 + ... + 830740.

Almost surely, 2^671741824 is an apocalyptic number.

671741824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671741824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722925000).

671741824 is an abundant number, since it is smaller than the sum of its proper divisors (774108176).

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

671741824 is a wasteful number, since it uses less digits than its factorization.

671741824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1323 counting only the distinct ones).

The product of its digits is 75264, while the sum is 40.

The square root of 671741824 is about 25917.9826375434. The cubic root of 671741824 is about 875.7916423065.

The spelling of 671741824 in words is "six hundred seventy-one million, seven hundred forty-one thousand, eight hundred twenty-four".