216675513 has 8 divisors (see below), whose sum is σ = 321000800. Its totient is φ = 144450324.

The previous prime is 216675491. The next prime is 216675583. The reversal of 216675513 is 315576612.

It is not a de Polignac number, because 216675513 - 2⁹ = 216675001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216675583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4012483 + ... + 4012536.

It is an arithmetic number, because the mean of its divisors is an integer number (40125100).

Almost surely, 2^216675513 is an apocalyptic number.

It is an amenable number.

216675513 is a deficient number, since it is larger than the sum of its proper divisors (104325287).

216675513 is an equidigital number, since it uses as much as digits as its factorization.

216675513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025028 (or 8025022 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 216675513 is about 14719.9019358147. The cubic root of 216675513 is about 600.6248240989.

The spelling of 216675513 in words is "two hundred sixteen million, six hundred seventy-five thousand, five hundred thirteen".