30669 has 4 divisors (see below), whose sum is σ = 40896. Its totient is φ = 20444.

The previous prime is 30661. The next prime is 30671. The reversal of 30669 is 96603.

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 a cyclic number.

It is not a de Polignac number, because 30669 - 2³ = 30661 is a prime.

It is a super-2 number, since 2×30669² = 1881175122, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5109 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (10224).

2³⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

30669 is a deficient number, since it is larger than the sum of its proper divisors (10227).

30669 is a wasteful number, since it uses less digits than its factorization.

30669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 30669 is about 175.1256691636. The cubic root of 30669 is about 31.3016000842.

The spelling of 30669 in words is "thirty thousand, six hundred sixty-nine".