671349999 has 8 divisors (see below), whose sum is σ = 895288240. Its totient is φ = 447489216.

The previous prime is 671349989. The next prime is 671350007. The reversal of 671349999 is 999943176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671349999 - 2¹¹ = 671347951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671349989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5379 + ... + 37035.

It is an arithmetic number, because the mean of its divisors is an integer number (111911030).

Almost surely, 2^671349999 is an apocalyptic number.

671349999 is a deficient number, since it is larger than the sum of its proper divisors (223938241).

671349999 is a wasteful number, since it uses less digits than its factorization.

671349999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38729.

The product of its digits is 3306744, while the sum is 57.

The square root of 671349999 is about 25910.4225940065. The cubic root of 671349999 is about 875.6213269709.

The spelling of 671349999 in words is "six hundred seventy-one million, three hundred forty-nine thousand, nine hundred ninety-nine".