671181120 has 224 divisors, whose sum is σ = 2389875840. Its totient is φ = 177315840.

The previous prime is 671181107. The next prime is 671181149. The reversal of 671181120 is 21181176.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1131544 + ... + 1132136.

Almost surely, 2^671181120 is an apocalyptic number.

671181120 is a gapful number since it is divisible by the number (60) 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 671181120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194937920).

671181120 is an abundant number, since it is smaller than the sum of its proper divisors (1718694720).

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

671181120 is a wasteful number, since it uses less digits than its factorization.

671181120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 671181120 is about 25907.1634881166. The cubic root of 671181120 is about 875.5478995707.

The spelling of 671181120 in words is "six hundred seventy-one million, one hundred eighty-one thousand, one hundred twenty".