20655011 has 6 divisors (see below), whose sum is σ = 22366260. Its totient is φ = 19066008.

The previous prime is 20654999. The next prime is 20655013. The reversal of 20655011 is 11055602.

It is not a de Polignac number, because 20655011 - 2¹⁰ = 20653987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20655013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60941 + ... + 61278.

It is an arithmetic number, because the mean of its divisors is an integer number (3727710).

Almost surely, 2^20655011 is an apocalyptic number.

20655011 is a deficient number, since it is larger than the sum of its proper divisors (1711249).

20655011 is a wasteful number, since it uses less digits than its factorization.

20655011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122245 (or 122232 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 20655011 is about 4544.7784324431. The cubic root of 20655011 is about 274.3732769197.

The spelling of 20655011 in words is "twenty million, six hundred fifty-five thousand, eleven".