216076947 has 4 divisors (see below), whose sum is σ = 288102600. Its totient is φ = 144051296.

The previous prime is 216076937. The next prime is 216076951. The reversal of 216076947 is 749670612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216076947 - 2¹⁸ = 215814803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216076899 and 216076908.

It is not an unprimeable number, because it can be changed into a prime (216076937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36012822 + ... + 36012827.

It is an arithmetic number, because the mean of its divisors is an integer number (72025650).

Almost surely, 2^216076947 is an apocalyptic number.

216076947 is a deficient number, since it is larger than the sum of its proper divisors (72025653).

216076947 is an equidigital number, since it uses as much as digits as its factorization.

216076947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72025652.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 216076947 is about 14699.5560137033. The cubic root of 216076947 is about 600.0712387636.

The spelling of 216076947 in words is "two hundred sixteen million, seventy-six thousand, nine hundred forty-seven".