30070661 has 2 divisors, whose sum is σ = 30070662. Its totient is φ = 30070660.

The previous prime is 30070643. The next prime is 30070669. The reversal of 30070661 is 16607003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22146436 + 7924225 = 4706^2 + 2815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30070661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30070669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15035330 + 15035331.

It is an arithmetic number, because the mean of its divisors is an integer number (15035331).

Almost surely, 2^30070661 is an apocalyptic number.

It is an amenable number.

30070661 is a deficient number, since it is larger than the sum of its proper divisors (1).

30070661 is an equidigital number, since it uses as much as digits as its factorization.

30070661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 30070661 is about 5483.6722185047. The cubic root of 30070661 is about 310.9670150396.

Adding to 30070661 its reverse (16607003), we get a palindrome (46677664).

The spelling of 30070661 in words is "thirty million, seventy thousand, six hundred sixty-one".