671878480 has 160 divisors (see below), whose sum is σ = 1970373888. Its totient is φ = 207360000.

The previous prime is 671878447. The next prime is 671878481. The reversal of 671878480 is 84878176.

It is a super-2 number, since 2×671878480² = 902841383774220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671878481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297355 + ... + 299605.

Almost surely, 2^671878480 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 671878480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985186944).

671878480 is an abundant number, since it is smaller than the sum of its proper divisors (1298495408).

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

671878480 is a wasteful number, since it uses less digits than its factorization.

671878480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 49.

The square root of 671878480 is about 25920.6188197736. The cubic root of 671878480 is about 875.8510272584.

The spelling of 671878480 in words is "six hundred seventy-one million, eight hundred seventy-eight thousand, four hundred eighty".