216765003 has 16 divisors (see below), whose sum is σ = 355717376. Its totient is φ = 114337440.

The previous prime is 216764993. The next prime is 216765007. The reversal of 216765003 is 300567612.

It is not a de Polignac number, because 216765003 - 2⁵ = 216764971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216765007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396733 + ... + 397278.

It is an arithmetic number, because the mean of its divisors is an integer number (22232336).

Almost surely, 2^216765003 is an apocalyptic number.

216765003 is a deficient number, since it is larger than the sum of its proper divisors (138952373).

216765003 is a wasteful number, since it uses less digits than its factorization.

216765003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794034.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 216765003 is about 14722.9413841121. The cubic root of 216765003 is about 600.7075015192.

The spelling of 216765003 in words is "two hundred sixteen million, seven hundred sixty-five thousand, three".