328365566 has 4 divisors (see below), whose sum is σ = 492548352. Its totient is φ = 164182782.

The previous prime is 328365533. The next prime is 328365599. The reversal of 328365566 is 665563823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665563823 = 12203 ⋅54541.

It is an interprime number because it is at equal distance from previous prime (328365533) and next prime (328365599).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82091390 + ... + 82091393.

It is an arithmetic number, because the mean of its divisors is an integer number (123137088).

Almost surely, 2^328365566 is an apocalyptic number.

328365566 is a deficient number, since it is larger than the sum of its proper divisors (164182786).

328365566 is a wasteful number, since it uses less digits than its factorization.

328365566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164182785.

The product of its digits is 777600, while the sum is 44.

The square root of 328365566 is about 18120.8599685556. The cubic root of 328365566 is about 689.8995625005.

The spelling of 328365566 in words is "three hundred twenty-eight million, three hundred sixty-five thousand, five hundred sixty-six".