671541120 has 384 divisors, whose sum is σ = 2503275840. Its totient is φ = 165445632.

The previous prime is 671541113. The next prime is 671541133. The reversal of 671541120 is 21145176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4901692 + ... + 4901828.

Almost surely, 2^671541120 is an apocalyptic number.

671541120 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 671541120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251637920).

671541120 is an abundant number, since it is smaller than the sum of its proper divisors (1831734720).

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

671541120 is a wasteful number, since it uses less digits than its factorization.

671541120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 671541120 is about 25914.1104419967. The cubic root of 671541120 is about 875.7044101843.

Adding to 671541120 its reverse (21145176), we get a palindrome (692686296).

The spelling of 671541120 in words is "six hundred seventy-one million, five hundred forty-one thousand, one hundred twenty".