30990063 has 16 divisors (see below), whose sum is σ = 44805600. Its totient is φ = 18939264.

The previous prime is 30990019. The next prime is 30990077. The reversal of 30990063 is 36009903.

It is not a de Polignac number, because 30990063 - 2¹⁰ = 30989039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30990063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30990263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3145 + ... + 8477.

It is an arithmetic number, because the mean of its divisors is an integer number (2800350).

Almost surely, 2^30990063 is an apocalyptic number.

30990063 is a deficient number, since it is larger than the sum of its proper divisors (13815537).

30990063 is a wasteful number, since it uses less digits than its factorization.

30990063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 30990063 is about 5566.8719223636. The cubic root of 30990063 is about 314.1044961687.

Adding to 30990063 its reverse (36009903), we get a palindrome (66999966).

The spelling of 30990063 in words is "thirty million, nine hundred ninety thousand, sixty-three".