30664 has 8 divisors (see below), whose sum is σ = 57510. Its totient is φ = 15328.

The previous prime is 30661. The next prime is 30671. The reversal of 30664 is 46603.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28900 + 1764 = 170^2 + 42^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909 + ... + 1924.

2³⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

30664 is a deficient number, since it is larger than the sum of its proper divisors (26846).

30664 is a wasteful number, since it uses less digits than its factorization.

30664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839 (or 3835 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30664 is about 175.1113931188. Note that the first 3 decimals coincide. The cubic root of 30664 is about 31.2998989473.

The spelling of 30664 in words is "thirty thousand, six hundred sixty-four".