20606706 has 24 divisors (see below), whose sum is σ = 45856044. Its totient is φ = 6683040.

The previous prime is 20606681. The next prime is 20606711. The reversal of 20606706 is 60760602.

It can be written as a sum of positive squares in 2 ways, for example, as 20331081 + 275625 = 4509^2 + 525^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20606706.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14805 + ... + 16136.

Almost surely, 2^20606706 is an apocalyptic number.

20606706 is an abundant number, since it is smaller than the sum of its proper divisors (25249338).

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

20606706 is a wasteful number, since it uses less digits than its factorization.

20606706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30986 (or 30983 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20606706 is about 4539.4609812179. The cubic root of 20606706 is about 274.1592215756.

It can be divided in two parts, 20606 and 706, that added together give a palindrome (21312).

The spelling of 20606706 in words is "twenty million, six hundred six thousand, seven hundred six".