30664709 has 2 divisors, whose sum is σ = 30664710. Its totient is φ = 30664708.

The previous prime is 30664693. The next prime is 30664741. The reversal of 30664709 is 90746603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30492484 + 172225 = 5522^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 30664709 - 2⁴ = 30664693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30664789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15332354 + 15332355.

It is an arithmetic number, because the mean of its divisors is an integer number (15332355).

Almost surely, 2^30664709 is an apocalyptic number.

It is an amenable number.

30664709 is a deficient number, since it is larger than the sum of its proper divisors (1).

30664709 is an equidigital number, since it uses as much as digits as its factorization.

30664709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 30664709 is about 5537.5724825956. The cubic root of 30664709 is about 313.0014017977.

The spelling of 30664709 in words is "thirty million, six hundred sixty-four thousand, seven hundred nine".