30664533 has 4 divisors (see below), whose sum is σ = 40886048. Its totient is φ = 20443020.

The previous prime is 30664489. The next prime is 30664541. The reversal of 30664533 is 33546603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30664533 - 2¹² = 30660437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30664533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30664553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5110753 + ... + 5110758.

It is an arithmetic number, because the mean of its divisors is an integer number (10221512).

Almost surely, 2^30664533 is an apocalyptic number.

It is an amenable number.

30664533 is a deficient number, since it is larger than the sum of its proper divisors (10221515).

30664533 is a wasteful number, since it uses less digits than its factorization.

30664533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221514.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 30664533 is about 5537.5565911330. The cubic root of 30664533 is about 313.0008029730. Note that the first 3 decimals are identical.

The spelling of 30664533 in words is "thirty million, six hundred sixty-four thousand, five hundred thirty-three".