216774235 has 8 divisors (see below), whose sum is σ = 260978256. Its totient is φ = 172853280.

The previous prime is 216774221. The next prime is 216774247. The reversal of 216774235 is 532477612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-216774235 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216774194 and 216774203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69076 + ... + 72145.

It is an arithmetic number, because the mean of its divisors is an integer number (32622282).

Almost surely, 2^216774235 is an apocalyptic number.

216774235 is a deficient number, since it is larger than the sum of its proper divisors (44204021).

216774235 is a wasteful number, since it uses less digits than its factorization.

216774235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141533.

The product of its digits is 70560, while the sum is 37.

The square root of 216774235 is about 14723.2549050813. The cubic root of 216774235 is about 600.7160294225.

The spelling of 216774235 in words is "two hundred sixteen million, seven hundred seventy-four thousand, two hundred thirty-five".