30646457 has 2 divisors, whose sum is σ = 30646458. Its totient is φ = 30646456.

The previous prime is 30646409. The next prime is 30646463. The reversal of 30646457 is 75464603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27920656 + 2725801 = 5284^2 + 1651^2 .

It is an emirp because it is prime and its reverse (75464603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30646457 - 2¹² = 30642361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30646477) 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, 15323228 + 15323229.

It is an arithmetic number, because the mean of its divisors is an integer number (15323229).

Almost surely, 2^30646457 is an apocalyptic number.

It is an amenable number.

30646457 is a deficient number, since it is larger than the sum of its proper divisors (1).

30646457 is an equidigital number, since it uses as much as digits as its factorization.

30646457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 30646457 is about 5535.9242227473. The cubic root of 30646457 is about 312.9392887519.

The spelling of 30646457 in words is "thirty million, six hundred forty-six thousand, four hundred fifty-seven".