671846775 has 12 divisors (see below), whose sum is σ = 1110786792. Its totient is φ = 358318240.

The previous prime is 671846771. The next prime is 671846779. The reversal of 671846775 is 577648176.

It is an interprime number because it is at equal distance from previous prime (671846771) and next prime (671846779).

It is not a de Polignac number, because 671846775 - 2² = 671846771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671846771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4478904 + ... + 4479053.

It is an arithmetic number, because the mean of its divisors is an integer number (92565566).

Almost surely, 2^671846775 is an apocalyptic number.

671846775 is a deficient number, since it is larger than the sum of its proper divisors (438940017).

671846775 is a wasteful number, since it uses less digits than its factorization.

671846775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957970 (or 8957965 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The square root of 671846775 is about 25920.0072337953. The cubic root of 671846775 is about 875.8372503159.

The spelling of 671846775 in words is "six hundred seventy-one million, eight hundred forty-six thousand, seven hundred seventy-five".