216796577 has 4 divisors (see below), whose sum is σ = 217751856. Its totient is φ = 215841300.

The previous prime is 216796549. The next prime is 216796603. The reversal of 216796577 is 775697612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216796577 - 2¹² = 216792481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216796537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477299 + ... + 477752.

It is an arithmetic number, because the mean of its divisors is an integer number (54437964).

Almost surely, 2^216796577 is an apocalyptic number.

It is an amenable number.

216796577 is a deficient number, since it is larger than the sum of its proper divisors (955279).

216796577 is an equidigital number, since it uses as much as digits as its factorization.

216796577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955278.

The product of its digits is 1111320, while the sum is 50.

The square root of 216796577 is about 14724.0136172173. The cubic root of 216796577 is about 600.7366664637.

The spelling of 216796577 in words is "two hundred sixteen million, seven hundred ninety-six thousand, five hundred seventy-seven".