30666233 has 6 divisors (see below), whose sum is σ = 33206814. Its totient is φ = 28307136.

The previous prime is 30666227. The next prime is 30666239. The reversal of 30666233 is 33266603.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30666227) and next prime (30666239).

It can be written as a sum of positive squares in 3 ways, for example, as 2650384 + 28015849 = 1628^2 + 5293^2 .

It is not a de Polignac number, because 30666233 - 2²⁰ = 29617657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30666196 and 30666205.

It is not an unprimeable number, because it can be changed into a prime (30666239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90560 + ... + 90897.

It is an arithmetic number, because the mean of its divisors is an integer number (5534469).

Almost surely, 2^30666233 is an apocalyptic number.

It is an amenable number.

30666233 is a deficient number, since it is larger than the sum of its proper divisors (2540581).

30666233 is a wasteful number, since it uses less digits than its factorization.

30666233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181483 (or 181470 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 29.

The square root of 30666233 is about 5537.7100863082. The cubic root of 30666233 is about 313.0065869791.

The spelling of 30666233 in words is "thirty million, six hundred sixty-six thousand, two hundred thirty-three".