30654997 has 2 divisors, whose sum is σ = 30654998. Its totient is φ = 30654996.

The previous prime is 30654977. The next prime is 30655019. The reversal of 30654997 is 79945603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24147396 + 6507601 = 4914^2 + 2551^2 .

It is an emirp because it is prime and its reverse (79945603) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30654997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30654977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15327498 + 15327499.

It is an arithmetic number, because the mean of its divisors is an integer number (15327499).

Almost surely, 2^30654997 is an apocalyptic number.

It is an amenable number.

30654997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30654997 is an equidigital number, since it uses as much as digits as its factorization.

30654997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 30654997 is about 5536.6954946069. The cubic root of 30654997 is about 312.9683541381.

The spelling of 30654997 in words is "thirty million, six hundred fifty-four thousand, nine hundred ninety-seven".