216699003 has 12 divisors (see below), whose sum is σ = 321148920. Its totient is φ = 144415008.

The previous prime is 216699001. The next prime is 216699013. The reversal of 216699003 is 300996612.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 216699003 - 2¹ = 216699001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216699001) 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, 75075 + ... + 77907.

It is an arithmetic number, because the mean of its divisors is an integer number (26762410).

Almost surely, 2^216699003 is an apocalyptic number.

216699003 is a deficient number, since it is larger than the sum of its proper divisors (104449917).

216699003 is an frugal number, since it uses more digits than its factorization.

216699003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 216699003 is about 14720.6998135279. The cubic root of 216699003 is about 600.6465280855.

The spelling of 216699003 in words is "two hundred sixteen million, six hundred ninety-nine thousand, three".