30645673 has 2 divisors, whose sum is σ = 30645674. Its totient is φ = 30645672.

The previous prime is 30645649. The next prime is 30645691. The reversal of 30645673 is 37654603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17707264 + 12938409 = 4208^2 + 3597^2 .

It is a cyclic number.

It is not a de Polignac number, because 30645673 - 2⁹ = 30645161 is a prime.

It is not a weakly prime, because it can be changed into another prime (30645073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15322836 + 15322837.

It is an arithmetic number, because the mean of its divisors is an integer number (15322837).

Almost surely, 2^30645673 is an apocalyptic number.

It is an amenable number.

30645673 is a deficient number, since it is larger than the sum of its proper divisors (1).

30645673 is an equidigital number, since it uses as much as digits as its factorization.

30645673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 30645673 is about 5535.8534120766. The cubic root of 30645673 is about 312.9366201836.

The spelling of 30645673 in words is "thirty million, six hundred forty-five thousand, six hundred seventy-three".