20800662 has 16 divisors (see below), whose sum is σ = 41672880. Its totient is φ = 6921632.

The previous prime is 20800643. The next prime is 20800667. The reversal of 20800662 is 26600802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800667) 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, 1264 + ... + 6572.

It is an arithmetic number, because the mean of its divisors is an integer number (2604555).

Almost surely, 2^20800662 is an apocalyptic number.

20800662 is an abundant number, since it is smaller than the sum of its proper divisors (20872218).

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

20800662 is a wasteful number, since it uses less digits than its factorization.

20800662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5967.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20800662 is about 4560.7742763702. The cubic root of 20800662 is about 275.0166909979.

The spelling of 20800662 in words is "twenty million, eight hundred thousand, six hundred sixty-two".