671110993 has 4 divisors (see below), whose sum is σ = 766984000. Its totient is φ = 575237988.

The previous prime is 671110961. The next prime is 671111003. The reversal of 671110993 is 399011176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671110993 - 2⁵ = 671110961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671119993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47936493 + ... + 47936506.

It is an arithmetic number, because the mean of its divisors is an integer number (191746000).

Almost surely, 2^671110993 is an apocalyptic number.

It is an amenable number.

671110993 is a deficient number, since it is larger than the sum of its proper divisors (95873007).

671110993 is an equidigital number, since it uses as much as digits as its factorization.

671110993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95873006.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 671110993 is about 25905.8100240081. The cubic root of 671110993 is about 875.5174052256.

The spelling of 671110993 in words is "six hundred seventy-one million, one hundred ten thousand, nine hundred ninety-three".