671112899 has 4 divisors (see below), whose sum is σ = 672865536. Its totient is φ = 669360264.

The previous prime is 671112863. The next prime is 671112943. The reversal of 671112899 is 998211176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671112899 - 2⁸ = 671112643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671112829) 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 3 ways as a sum of consecutive naturals, for example, 875744 + ... + 876509.

It is an arithmetic number, because the mean of its divisors is an integer number (168216384).

Almost surely, 2^671112899 is an apocalyptic number.

671112899 is a deficient number, since it is larger than the sum of its proper divisors (1752637).

671112899 is a wasteful number, since it uses less digits than its factorization.

671112899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752636.

The product of its digits is 54432, while the sum is 44.

The square root of 671112899 is about 25905.8468110965. The cubic root of 671112899 is about 875.5182340674.

The spelling of 671112899 in words is "six hundred seventy-one million, one hundred twelve thousand, eight hundred ninety-nine".