1687133327 has 4 divisors (see below), whose sum is σ = 1840509096. Its totient is φ = 1533757560.

The previous prime is 1687133323. The next prime is 1687133333. The reversal of 1687133327 is 7233317861.

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 1687133327 - 2² = 1687133323 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 (1687133323) 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 3 ways as a sum of consecutive naturals, for example, 76687868 + ... + 76687889.

It is an arithmetic number, because the mean of its divisors is an integer number (460127274).

Almost surely, 2^1687133327 is an apocalyptic number.

1687133327 is a deficient number, since it is larger than the sum of its proper divisors (153375769).

1687133327 is a wasteful number, since it uses less digits than its factorization.

1687133327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153375768.

The product of its digits is 127008, while the sum is 41.

The square root of 1687133327 is about 41074.7285687928. The cubic root of 1687133327 is about 1190.4645520474.

The spelling of 1687133327 in words is "one billion, six hundred eighty-seven million, one hundred thirty-three thousand, three hundred twenty-seven".