671073620 has 36 divisors (see below), whose sum is σ = 1639339380. Its totient is φ = 230082048.

The previous prime is 671073607. The next prime is 671073631. The reversal of 671073620 is 26370176.

It can be written as a sum of positive squares in 2 ways, for example, as 198359056 + 472714564 = 14084^2 + 21742^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 341405 + ... + 343364.

It is an arithmetic number, because the mean of its divisors is an integer number (45537205).

Almost surely, 2^671073620 is an apocalyptic number.

It is an amenable number.

671073620 is an abundant number, since it is smaller than the sum of its proper divisors (968265760).

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

671073620 is a wasteful number, since it uses less digits than its factorization.

671073620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684792 (or 684783 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 671073620 is about 25905.0886892904. The cubic root of 671073620 is about 875.5011529118.

The spelling of 671073620 in words is "six hundred seventy-one million, seventy-three thousand, six hundred twenty".