30606985 has 4 divisors (see below), whose sum is σ = 36728388. Its totient is φ = 24485584.

The previous prime is 30606949. The next prime is 30606991. The reversal of 30606985 is 58960603.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15776784 + 14830201 = 3972^2 + 3851^2 .

It is a cyclic number.

It is not a de Polignac number, because 30606985 - 2⁷ = 30606857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3060694 + ... + 3060703.

It is an arithmetic number, because the mean of its divisors is an integer number (9182097).

Almost surely, 2^30606985 is an apocalyptic number.

It is an amenable number.

30606985 is a deficient number, since it is larger than the sum of its proper divisors (6121403).

30606985 is an equidigital number, since it uses as much as digits as its factorization.

30606985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121402.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 30606985 is about 5532.3579963701. The cubic root of 30606985 is about 312.8048779282.

The spelling of 30606985 in words is "thirty million, six hundred six thousand, nine hundred eighty-five".