671919701 has 2 divisors, whose sum is σ = 671919702. Its totient is φ = 671919700.

The previous prime is 671919673. The next prime is 671919749. The reversal of 671919701 is 107919176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 529690225 + 142229476 = 23015^2 + 11926^2 .

It is a cyclic number.

It is not a de Polignac number, because 671919701 - 2¹⁰ = 671918677 is a prime.

It is equal to p_34872791 and since 671919701 and 34872791 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671919301) 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 as a sum of consecutive naturals, namely, 335959850 + 335959851.

It is an arithmetic number, because the mean of its divisors is an integer number (335959851).

Almost surely, 2^671919701 is an apocalyptic number.

It is an amenable number.

671919701 is a deficient number, since it is larger than the sum of its proper divisors (1).

671919701 is an equidigital number, since it uses as much as digits as its factorization.

671919701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 41.

The square root of 671919701 is about 25921.4139467738. The cubic root of 671919701 is about 875.8689385911.

The spelling of 671919701 in words is "six hundred seventy-one million, nine hundred nineteen thousand, seven hundred one".