30075649 has 2 divisors, whose sum is σ = 30075650. Its totient is φ = 30075648.

The previous prime is 30075637. The next prime is 30075677. The reversal of 30075649 is 94657003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29322225 + 753424 = 5415^2 + 868^2 .

It is a cyclic number.

It is not a de Polignac number, because 30075649 - 2⁹ = 30075137 is a prime.

It is not a weakly prime, because it can be changed into another prime (30075049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15037824 + 15037825.

It is an arithmetic number, because the mean of its divisors is an integer number (15037825).

Almost surely, 2^30075649 is an apocalyptic number.

It is an amenable number.

30075649 is a deficient number, since it is larger than the sum of its proper divisors (1).

30075649 is an equidigital number, since it uses as much as digits as its factorization.

30075649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 30075649 is about 5484.1270043645. The cubic root of 30075649 is about 310.9842080738.

The spelling of 30075649 in words is "thirty million, seventy-five thousand, six hundred forty-nine".