30660065 has 16 divisors (see below), whose sum is σ = 37564560. Its totient is φ = 24019200.

The previous prime is 30660043. The next prime is 30660067. The reversal of 30660065 is 56006603.

It can be written as a sum of positive squares in 8 ways, for example, as 200704 + 30459361 = 448^2 + 5519^2 .

It is not a de Polignac number, because 30660065 - 2⁸ = 30659809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30660067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54767 + ... + 55323.

It is an arithmetic number, because the mean of its divisors is an integer number (2347785).

Almost surely, 2^30660065 is an apocalyptic number.

It is an amenable number.

30660065 is a deficient number, since it is larger than the sum of its proper divisors (6904495).

30660065 is a wasteful number, since it uses less digits than its factorization.

30660065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 30660065 is about 5537.1531494081. The cubic root of 30660065 is about 312.9856002249.

Adding to 30660065 its reverse (56006603), we get a palindrome (86666668).

The spelling of 30660065 in words is "thirty million, six hundred sixty thousand, sixty-five".