216776675 has 6 divisors (see below), whose sum is σ = 268803108. Its totient is φ = 173421320.

The previous prime is 216776669. The next prime is 216776699. The reversal of 216776675 is 576677612.

It is not a de Polignac number, because 216776675 - 2⁶ = 216776611 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4335509 + ... + 4335558.

It is an arithmetic number, because the mean of its divisors is an integer number (44800518).

Almost surely, 2^216776675 is an apocalyptic number.

216776675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216776675 is a deficient number, since it is larger than the sum of its proper divisors (52026433).

216776675 is an equidigital number, since it uses as much as digits as its factorization.

216776675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8671077 (or 8671072 counting only the distinct ones).

The product of its digits is 740880, while the sum is 47.

The square root of 216776675 is about 14723.3377669603. The cubic root of 216776675 is about 600.7182832906.

The spelling of 216776675 in words is "two hundred sixteen million, seven hundred seventy-six thousand, six hundred seventy-five".