671621314 has 16 divisors (see below), whose sum is σ = 1239916608. Its totient is φ = 265696272.

The previous prime is 671621303. The next prime is 671621317. The reversal of 671621314 is 413126176.

It is not an unprimeable number, because it can be changed into a prime (671621317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1844932 + ... + 1845295.

It is an arithmetic number, because the mean of its divisors is an integer number (77494788).

Almost surely, 2^671621314 is an apocalyptic number.

671621314 is a deficient number, since it is larger than the sum of its proper divisors (568295294).

671621314 is a wasteful number, since it uses less digits than its factorization.

671621314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690249.

The product of its digits is 6048, while the sum is 31.

The square root of 671621314 is about 25915.6576995453. The cubic root of 671621314 is about 875.7392670442.

The spelling of 671621314 in words is "six hundred seventy-one million, six hundred twenty-one thousand, three hundred fourteen".