20630703 has 4 divisors (see below), whose sum is σ = 27507608.
Its totient is φ = 13753800.
The previous prime is 20630699. The next prime is 20630711. The reversal of 20630703 is 30703602.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 20630703 - 22 = 20630699 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 20630703.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20630773) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3438448 + ... + 3438453.
It is an arithmetic number, because the mean of its divisors is an integer number (6876902).
Almost surely, 220630703 is an apocalyptic number.
20630703 is a deficient number, since it is larger than the sum of its proper divisors (6876905).
20630703 is an equidigital number, since it uses as much as digits as its factorization.
20630703 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6876904.
The product of its (nonzero) digits is 756, while the sum is 21.
The square root of 20630703 is about 4542.1033673839.
The cubic root of 20630703 is about 274.2656019401.
The spelling of 20630703 in words is "twenty million, six hundred thirty thousand, seven hundred three".