30690643 has 8 divisors (see below), whose sum is σ = 32356800. Its totient is φ = 29029608.

The previous prime is 30690641. The next prime is 30690659. The reversal of 30690643 is 34609603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30690643 - 2¹ = 30690641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30690641) 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 in 7 ways as a sum of consecutive naturals, for example, 23280 + ... + 24562.

It is an arithmetic number, because the mean of its divisors is an integer number (4044600).

Almost surely, 2^30690643 is an apocalyptic number.

30690643 is a deficient number, since it is larger than the sum of its proper divisors (1666157).

30690643 is a wasteful number, since it uses less digits than its factorization.

30690643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 30690643 is about 5539.9136274855. The cubic root of 30690643 is about 313.0896149405.

The spelling of 30690643 in words is "thirty million, six hundred ninety thousand, six hundred forty-three".