328340777 has 4 divisors (see below), whose sum is σ = 334535940. Its totient is φ = 322145616.

The previous prime is 328340773. The next prime is 328340783. The reversal of 328340777 is 777043823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 777043823 = 67 ⋅11597669.

It can be written as a sum of positive squares in 2 ways, for example, as 230310976 + 98029801 = 15176^2 + 9901^2 .

It is a cyclic number.

It is not a de Polignac number, because 328340777 - 2² = 328340773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328340773) 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, 3097502 + ... + 3097607.

It is an arithmetic number, because the mean of its divisors is an integer number (83633985).

Almost surely, 2^328340777 is an apocalyptic number.

It is an amenable number.

328340777 is a deficient number, since it is larger than the sum of its proper divisors (6195163).

328340777 is an equidigital number, since it uses as much as digits as its factorization.

328340777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195162.

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 328340777 is about 18120.1759649293. The cubic root of 328340777 is about 689.8822014124.

The spelling of 328340777 in words is "three hundred twenty-eight million, three hundred forty thousand, seven hundred seventy-seven".