671673775 has 24 divisors (see below), whose sum is σ = 845664624. Its totient is φ = 529152000.

The previous prime is 671673749. The next prime is 671673781. The reversal of 671673775 is 577376176.

671673775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671673775 - 2¹⁹ = 671149487 is a prime.

It is a super-2 number, since 2×671673775² = 902291320045501250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515625 + ... + 516925.

It is an arithmetic number, because the mean of its divisors is an integer number (35236026).

Almost surely, 2^671673775 is an apocalyptic number.

671673775 is a deficient number, since it is larger than the sum of its proper divisors (173990849).

671673775 is a wasteful number, since it uses less digits than its factorization.

671673775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1606 counting only the distinct ones).

The product of its digits is 1296540, while the sum is 49.

The square root of 671673775 is about 25916.6698285100. The cubic root of 671673775 is about 875.7620680684.

The spelling of 671673775 in words is "six hundred seventy-one million, six hundred seventy-three thousand, seven hundred seventy-five".