30645863 has 2 divisors, whose sum is σ = 30645864. Its totient is φ = 30645862.

The previous prime is 30645859. The next prime is 30645871. The reversal of 30645863 is 36854603.

It is a weak prime.

It is an emirp because it is prime and its reverse (36854603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30645863 - 2² = 30645859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30605863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15322931 + 15322932.

It is an arithmetic number, because the mean of its divisors is an integer number (15322932).

Almost surely, 2^30645863 is an apocalyptic number.

30645863 is a deficient number, since it is larger than the sum of its proper divisors (1).

30645863 is an equidigital number, since it uses as much as digits as its factorization.

30645863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 30645863 is about 5535.8705729090. The cubic root of 30645863 is about 312.9372669071.

The spelling of 30645863 in words is "thirty million, six hundred forty-five thousand, eight hundred sixty-three".