671699323 has 4 divisors (see below), whose sum is σ = 672034360. Its totient is φ = 671364288.

The previous prime is 671699297. The next prime is 671699333. The reversal of 671699323 is 323996176.

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 671699323 - 2²⁵ = 638144891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671699333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164493 + ... + 168526.

It is an arithmetic number, because the mean of its divisors is an integer number (168008590).

Almost surely, 2^671699323 is an apocalyptic number.

671699323 is a deficient number, since it is larger than the sum of its proper divisors (335037).

671699323 is a wasteful number, since it uses less digits than its factorization.

671699323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335036.

The product of its digits is 367416, while the sum is 46.

The square root of 671699323 is about 25917.1627112228. The cubic root of 671699323 is about 875.7731715170.

The spelling of 671699323 in words is "six hundred seventy-one million, six hundred ninety-nine thousand, three hundred twenty-three".