671067180 has 360 divisors, whose sum is σ = 2591332128. Its totient is φ = 141917184.

The previous prime is 671067149. The next prime is 671067181. The reversal of 671067180 is 81760176.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (671067181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 11373991 + ... + 11374049.

Almost surely, 2^671067180 is an apocalyptic number.

671067180 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 671067180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295666064).

671067180 is an abundant number, since it is smaller than the sum of its proper divisors (1920264948).

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

671067180 is a wasteful number, since it uses less digits than its factorization.

671067180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 671067180 is about 25904.9643890896. The cubic root of 671067180 is about 875.4983523023.

The spelling of 671067180 in words is "six hundred seventy-one million, sixty-seven thousand, one hundred eighty".