328681555 has 8 divisors (see below), whose sum is σ = 394599744. Its totient is φ = 262824000.

The previous prime is 328681547. The next prime is 328681559. The reversal of 328681555 is 555186823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328681555 - 2³ = 328681547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328681559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2226 + ... + 25735.

It is an arithmetic number, because the mean of its divisors is an integer number (49324968).

Almost surely, 2^328681555 is an apocalyptic number.

328681555 is a deficient number, since it is larger than the sum of its proper divisors (65918189).

328681555 is a wasteful number, since it uses less digits than its factorization.

328681555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30317.

The product of its digits is 288000, while the sum is 43.

The square root of 328681555 is about 18129.5768014590. The cubic root of 328681555 is about 690.1207903076.

The spelling of 328681555 in words is "three hundred twenty-eight million, six hundred eighty-one thousand, five hundred fifty-five".