30806065 has 4 divisors (see below), whose sum is σ = 36967284. Its totient is φ = 24644848.

The previous prime is 30806063. The next prime is 30806071. The reversal of 30806065 is 56060803.

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 15689521 + 15116544 = 3961^2 + 3888^2 .

It is a cyclic number.

It is not a de Polignac number, because 30806065 - 2¹ = 30806063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30806063) 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, 3080602 + ... + 3080611.

It is an arithmetic number, because the mean of its divisors is an integer number (9241821).

Almost surely, 2^30806065 is an apocalyptic number.

It is an amenable number.

30806065 is a deficient number, since it is larger than the sum of its proper divisors (6161219).

30806065 is an equidigital number, since it uses as much as digits as its factorization.

30806065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161218.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 30806065 is about 5550.3211618788. The cubic root of 30806065 is about 313.4816152192.

Adding to 30806065 its reverse (56060803), we get a palindrome (86866868).

The spelling of 30806065 in words is "thirty million, eight hundred six thousand, sixty-five".