20616703 has 4 divisors (see below), whose sum is σ = 20626360. Its totient is φ = 20607048.

The previous prime is 20616697. The next prime is 20616707. The reversal of 20616703 is 30761602.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20616703 - 2⁹ = 20616191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616707) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (5156590).

Almost surely, 2^20616703 is an apocalyptic number.

20616703 is a deficient number, since it is larger than the sum of its proper divisors (9657).

20616703 is an equidigital number, since it uses as much as digits as its factorization.

20616703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9656.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20616703 is about 4540.5619696245. The cubic root of 20616703 is about 274.2035490006.

The spelling of 20616703 in words is "twenty million, six hundred sixteen thousand, seven hundred three".