327661493 has 4 divisors (see below), whose sum is σ = 328870848. Its totient is φ = 326452140.

The previous prime is 327661447. The next prime is 327661531. The reversal of 327661493 is 394166723.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 327661493 - 2¹² = 327657397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 327661493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (327661193) 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, 604271 + ... + 604812.

It is an arithmetic number, because the mean of its divisors is an integer number (82217712).

Almost surely, 2^327661493 is an apocalyptic number.

It is an amenable number.

327661493 is a deficient number, since it is larger than the sum of its proper divisors (1209355).

327661493 is a wasteful number, since it uses less digits than its factorization.

327661493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209354.

The product of its digits is 163296, while the sum is 41.

The square root of 327661493 is about 18101.4224026732. The cubic root of 327661493 is about 689.4061213592.

The spelling of 327661493 in words is "three hundred twenty-seven million, six hundred sixty-one thousand, four hundred ninety-three".