671420530 has 24 divisors (see below), whose sum is σ = 1328416236. Its totient is φ = 244152480.

The previous prime is 671420513. The next prime is 671420543. The reversal of 671420530 is 35024176.

It can be written as a sum of positive squares in 2 ways, for example, as 669929689 + 1490841 = 25883^2 + 1221^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276237 + ... + 278656.

Almost surely, 2^671420530 is an apocalyptic number.

671420530 is a deficient number, since it is larger than the sum of its proper divisors (656995706).

671420530 is a wasteful number, since it uses less digits than its factorization.

671420530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554922 (or 554911 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 671420530 is about 25911.7836128662. The cubic root of 671420530 is about 875.6519897078.

It can be divided in two parts, 671 and 420530, that added together give a square (421201 = 649²).

The spelling of 671420530 in words is "six hundred seventy-one million, four hundred twenty thousand, five hundred thirty".