671610020 has 48 divisors (see below), whose sum is σ = 1431561600. Its totient is φ = 264633600.

The previous prime is 671610013. The next prime is 671610029. The reversal of 671610020 is 20016176.

It is not an unprimeable number, because it can be changed into a prime (671610029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638495 + ... + 639545.

It is an arithmetic number, because the mean of its divisors is an integer number (29824200).

Almost surely, 2^671610020 is an apocalyptic number.

It is an amenable number.

671610020 is an abundant number, since it is smaller than the sum of its proper divisors (759951580).

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

671610020 is a wasteful number, since it uses less digits than its factorization.

671610020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 671610020 is about 25915.4397994709. The cubic root of 671610020 is about 875.7343581992.

Adding to 671610020 its reverse (20016176), we get a palindrome (691626196).

The spelling of 671610020 in words is "six hundred seventy-one million, six hundred ten thousand, twenty".