327747421 has 4 divisors (see below), whose sum is σ = 327876412. Its totient is φ = 327618432.

The previous prime is 327747377. The next prime is 327747467. The reversal of 327747421 is 124747723.

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

It can be written as a sum of positive squares in 2 ways, for example, as 134815321 + 192932100 = 11611^2 + 13890^2 .

It is a cyclic number.

It is not a de Polignac number, because 327747421 - 2⁷ = 327747293 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 (327747491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60606 + ... + 65791.

It is an arithmetic number, because the mean of its divisors is an integer number (81969103).

Almost surely, 2^327747421 is an apocalyptic number.

It is an amenable number.

327747421 is a deficient number, since it is larger than the sum of its proper divisors (128991).

327747421 is a wasteful number, since it uses less digits than its factorization.

327747421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128990.

The product of its digits is 65856, while the sum is 37.

The square root of 327747421 is about 18103.7957622152. The cubic root of 327747421 is about 689.4663808168.

The spelling of 327747421 in words is "three hundred twenty-seven million, seven hundred forty-seven thousand, four hundred twenty-one".