20634606 has 12 divisors (see below), whose sum is σ = 44708352. Its totient is φ = 6878196.

The previous prime is 20634571. The next prime is 20634613. The reversal of 20634606 is 60643602.

20634606 is a `hidden beast` number, since 20 + 6 + 34 + 606 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20634606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 573166 + ... + 573201.

It is an arithmetic number, because the mean of its divisors is an integer number (3725696).

Almost surely, 2^20634606 is an apocalyptic number.

20634606 is an abundant number, since it is smaller than the sum of its proper divisors (24073746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20634606 is a wasteful number, since it uses less digits than its factorization.

20634606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146375 (or 1146372 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 20634606 is about 4542.5329938262. The cubic root of 20634606 is about 274.2828964089.

The spelling of 20634606 in words is "twenty million, six hundred thirty-four thousand, six hundred six".