671761075 has 12 divisors (see below), whose sum is σ = 861708240. Its totient is φ = 518876960.

The previous prime is 671761073. The next prime is 671761091. The reversal of 671761075 is 570167176.

It is not a de Polignac number, because 671761075 - 2¹ = 671761073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671761073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462559 + ... + 464008.

It is an arithmetic number, because the mean of its divisors is an integer number (71809020).

Almost surely, 2^671761075 is an apocalyptic number.

671761075 is a deficient number, since it is larger than the sum of its proper divisors (189947165).

671761075 is a wasteful number, since it uses less digits than its factorization.

671761075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926606 (or 926601 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 671761075 is about 25918.3540179541. The cubic root of 671761075 is about 875.8000084691.

The spelling of 671761075 in words is "six hundred seventy-one million, seven hundred sixty-one thousand, seventy-five".