306630 has 24 divisors (see below), whose sum is σ = 797472. Its totient is φ = 81744.

The previous prime is 306589. The next prime is 306643. The reversal of 306630 is 36603.

306630 is a `hidden beast` number, since 3 + 0 + 663 + 0 = 666.

306630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1614 + ... + 1793.

It is an arithmetic number, because the mean of its divisors is an integer number (33228).

2³⁰⁶⁶³⁰ is an apocalyptic number.

306630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

306630 is an abundant number, since it is smaller than the sum of its proper divisors (490842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

306630 is a wasteful number, since it uses less digits than its factorization.

306630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 306630 is about 553.7418170953. The cubic root of 306630 is about 67.4328550411.

The spelling of 306630 in words is "three hundred six thousand, six hundred thirty".