671835020 has 24 divisors (see below), whose sum is σ = 1445266368. Its totient is φ = 262179200.

The previous prime is 671835013. The next prime is 671835023. The reversal of 671835020 is 20538176.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (671835023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408836 + ... + 410475.

It is an arithmetic number, because the mean of its divisors is an integer number (60219432).

Almost surely, 2^671835020 is an apocalyptic number.

It is an amenable number.

671835020 is an abundant number, since it is smaller than the sum of its proper divisors (773431348).

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

671835020 is a wasteful number, since it uses less digits than its factorization.

671835020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819361 (or 819359 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 671835020 is about 25919.7804774655. The cubic root of 671835020 is about 875.8321422430.

The spelling of 671835020 in words is "six hundred seventy-one million, eight hundred thirty-five thousand, twenty".