1327668021 has 12 divisors (see below), whose sum is σ = 1918227948. Its totient is φ = 884888064.

The previous prime is 1327667993. The next prime is 1327668059. The reversal of 1327668021 is 1208667231.

1327668021 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1171692900 + 155975121 = 34230^2 + 12489^2 .

It is not a de Polignac number, because 1327668021 - 2¹⁰ = 1327666997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327668071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24021 + ... + 56853.

It is an arithmetic number, because the mean of its divisors is an integer number (159852329).

Almost surely, 2^1327668021 is an apocalyptic number.

It is an amenable number.

1327668021 is a deficient number, since it is larger than the sum of its proper divisors (590559927).

1327668021 is a wasteful number, since it uses less digits than its factorization.

1327668021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37332 (or 37329 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1327668021 is about 36437.1791032182. The cubic root of 1327668021 is about 1099.0813324353.

The spelling of 1327668021 in words is "one billion, three hundred twenty-seven million, six hundred sixty-eight thousand, twenty-one".