30620685 has 16 divisors (see below), whose sum is σ = 51572160. Its totient is φ = 15471360.

The previous prime is 30620683. The next prime is 30620693. The reversal of 30620685 is 58602603.

It is not a de Polignac number, because 30620685 - 2¹ = 30620683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30620683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 53436 + ... + 54005.

It is an arithmetic number, because the mean of its divisors is an integer number (3223260).

Almost surely, 2^30620685 is an apocalyptic number.

It is an amenable number.

30620685 is a deficient number, since it is larger than the sum of its proper divisors (20951475).

30620685 is a wasteful number, since it uses less digits than its factorization.

30620685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107468.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 30620685 is about 5533.5960279008. The cubic root of 30620685 is about 312.8515425222.

The spelling of 30620685 in words is "thirty million, six hundred twenty thousand, six hundred eighty-five".