30655 has 4 divisors (see below), whose sum is σ = 36792. Its totient is φ = 24520.

The previous prime is 30649. The next prime is 30661. The reversal of 30655 is 55603.

30655 = 38² + 39² + ... + 52².

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (30649) and next prime (30661).

It is not a de Polignac number, because 30655 - 2¹¹ = 28607 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3061 + ... + 3070.

It is an arithmetic number, because the mean of its divisors is an integer number (9198).

2³⁰⁶⁵⁵ is an apocalyptic number.

30655 is a deficient number, since it is larger than the sum of its proper divisors (6137).

30655 is an equidigital number, since it uses as much as digits as its factorization.

30655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6136.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 30655 is about 175.0856933047. The cubic root of 30655 is about 31.2968364347.

It can be divided in two parts, 306 and 55, that added together give a square (361 = 19²).

The spelling of 30655 in words is "thirty thousand, six hundred fifty-five".