671973376 has 32 divisors (see below), whose sum is σ = 1343991780. Its totient is φ = 335970304.

The previous prime is 671973353. The next prime is 671973397. The reversal of 671973376 is 673379176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22515 + ... + 43021.

Almost surely, 2^671973376 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 671973376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (671995890).

671973376 is an abundant number, since it is smaller than the sum of its proper divisors (672018404).

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

671973376 is an frugal number, since it uses more digits than its factorization.

671973376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20537 (or 20509 counting only the distinct ones).

The product of its digits is 1000188, while the sum is 49.

The square root of 671973376 is about 25922.4492669964. The cubic root of 671973376 is about 875.8922603330.

The spelling of 671973376 in words is "six hundred seventy-one million, nine hundred seventy-three thousand, three hundred seventy-six".