30680737 has 2 divisors, whose sum is σ = 30680738. Its totient is φ = 30680736.

The previous prime is 30680719. The next prime is 30680747. The reversal of 30680737 is 73708603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30206016 + 474721 = 5496^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 30680737 - 2⁷ = 30680609 is a prime.

It is not a weakly prime, because it can be changed into another prime (30680717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15340368 + 15340369.

It is an arithmetic number, because the mean of its divisors is an integer number (15340369).

Almost surely, 2^30680737 is an apocalyptic number.

It is an amenable number.

30680737 is a deficient number, since it is larger than the sum of its proper divisors (1).

30680737 is an equidigital number, since it uses as much as digits as its factorization.

30680737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 30680737 is about 5539.0194980700. The cubic root of 30680737 is about 313.0559260681.

The spelling of 30680737 in words is "thirty million, six hundred eighty thousand, seven hundred thirty-seven".