30639701 has 2 divisors, whose sum is σ = 30639702. Its totient is φ = 30639700.

The previous prime is 30639691. The next prime is 30639709. The reversal of 30639701 is 10793603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17859076 + 12780625 = 4226^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 30639701 - 2¹⁴ = 30623317 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 (30639709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15319850 + 15319851.

It is an arithmetic number, because the mean of its divisors is an integer number (15319851).

Almost surely, 2^30639701 is an apocalyptic number.

It is an amenable number.

30639701 is a deficient number, since it is larger than the sum of its proper divisors (1).

30639701 is an equidigital number, since it uses as much as digits as its factorization.

30639701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 30639701 is about 5535.3139929005. The cubic root of 30639701 is about 312.9162912788.

The spelling of 30639701 in words is "thirty million, six hundred thirty-nine thousand, seven hundred one".