30646 has 16 divisors (see below), whose sum is σ = 57600. Its totient is φ = 11880.

The previous prime is 30643. The next prime is 30649. The reversal of 30646 is 64603.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30643) and next prime (30649).

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30643) 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 7 ways as a sum of consecutive naturals, for example, 55 + ... + 253.

It is an arithmetic number, because the mean of its divisors is an integer number (3600).

2³⁰⁶⁴⁶ is an apocalyptic number.

30646 is a deficient number, since it is larger than the sum of its proper divisors (26954).

30646 is a wasteful number, since it uses less digits than its factorization.

30646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

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

The square root of 30646 is about 175.0599897178. The cubic root of 30646 is about 31.2937733227.

It can be divided in two parts, 30 and 646, that added together give a palindrome (676).

The spelling of 30646 in words is "thirty thousand, six hundred forty-six".