30747797 has 2 divisors, whose sum is σ = 30747798. Its totient is φ = 30747796.

The previous prime is 30747767. The next prime is 30747799. The reversal of 30747797 is 79774703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22648081 + 8099716 = 4759^2 + 2846^2 .

It is a cyclic number.

It is not a de Polignac number, because 30747797 - 2¹⁴ = 30731413 is a prime.

Together with 30747799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30747799) 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, 15373898 + 15373899.

It is an arithmetic number, because the mean of its divisors is an integer number (15373899).

Almost surely, 2^30747797 is an apocalyptic number.

It is an amenable number.

30747797 is a deficient number, since it is larger than the sum of its proper divisors (1).

30747797 is an equidigital number, since it uses as much as digits as its factorization.

30747797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259308, while the sum is 44.

The square root of 30747797 is about 5545.0696118263. The cubic root of 30747797 is about 313.2838459896.

The spelling of 30747797 in words is "thirty million, seven hundred forty-seven thousand, seven hundred ninety-seven".