20701803 has 4 divisors (see below), whose sum is σ = 27602408. Its totient is φ = 13801200.

The previous prime is 20701789. The next prime is 20701819. The reversal of 20701803 is 30810702.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20701803 - 2⁴ = 20701787 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 20701803.

It is not an unprimeable number, because it can be changed into a prime (20701823) 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, 3450298 + ... + 3450303.

It is an arithmetic number, because the mean of its divisors is an integer number (6900602).

Almost surely, 2^20701803 is an apocalyptic number.

20701803 is a deficient number, since it is larger than the sum of its proper divisors (6900605).

20701803 is an equidigital number, since it uses as much as digits as its factorization.

20701803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900604.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20701803 is about 4549.9234059487. The cubic root of 20701803 is about 274.5803096791.

The spelling of 20701803 in words is "twenty million, seven hundred one thousand, eight hundred three".