20604611 has 8 divisors (see below), whose sum is σ = 21159600. Its totient is φ = 20053152.

The previous prime is 20604601. The next prime is 20604613. The reversal of 20604611 is 11640602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20604611 - 2⁶ = 20604547 is a prime.

It is a super-2 number, since 2×20604611² = 849099988922642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20604613) 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 7 ways as a sum of consecutive naturals, for example, 14321 + ... + 15693.

It is an arithmetic number, because the mean of its divisors is an integer number (2644950).

Almost surely, 2^20604611 is an apocalyptic number.

20604611 is a deficient number, since it is larger than the sum of its proper divisors (554989).

20604611 is a wasteful number, since it uses less digits than its factorization.

20604611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20604611 is about 4539.2302210837. The cubic root of 20604611 is about 274.1499303763.

The spelling of 20604611 in words is "twenty million, six hundred four thousand, six hundred eleven".