20606811 has 8 divisors (see below), whose sum is σ = 28921920. Its totient is φ = 13014792.

The previous prime is 20606801. The next prime is 20606813. The reversal of 20606811 is 11860602.

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

It is not a de Polignac number, because 20606811 - 2¹³ = 20598619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20606813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180705 + ... + 180818.

It is an arithmetic number, because the mean of its divisors is an integer number (3615240).

Almost surely, 2^20606811 is an apocalyptic number.

20606811 is a deficient number, since it is larger than the sum of its proper divisors (8315109).

20606811 is a wasteful number, since it uses less digits than its factorization.

20606811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361545.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 20606811 is about 4539.4725464529. The cubic root of 20606811 is about 274.1596872277.

The spelling of 20606811 in words is "twenty million, six hundred six thousand, eight hundred eleven".