16820703 has 12 divisors (see below), whose sum is σ = 25196808. Its totient is φ = 11213640.

The previous prime is 16820677. The next prime is 16820707. The reversal of 16820703 is 30702861.

It is not a de Polignac number, because 16820703 - 2¹⁸ = 16558559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16820707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34368 + ... + 34853.

It is an arithmetic number, because the mean of its divisors is an integer number (2099734).

Almost surely, 2^16820703 is an apocalyptic number.

16820703 is a deficient number, since it is larger than the sum of its proper divisors (8376105).

16820703 is an frugal number, since it uses more digits than its factorization.

16820703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69236 (or 69224 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 16820703 is about 4101.3050362049. The cubic root of 16820703 is about 256.2209954877.

The spelling of 16820703 in words is "sixteen million, eight hundred twenty thousand, seven hundred three".