216982677 has 8 divisors (see below), whose sum is σ = 289931616. Its totient is φ = 144344432.

The previous prime is 216982651. The next prime is 216982681. The reversal of 216982677 is 776289612.

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

It is a cyclic number.

It is not a de Polignac number, because 216982677 - 2⁶ = 216982613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216982637) 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, 76038 + ... + 78839.

It is an arithmetic number, because the mean of its divisors is an integer number (36241452).

Almost surely, 2^216982677 is an apocalyptic number.

It is an amenable number.

216982677 is a deficient number, since it is larger than the sum of its proper divisors (72948939).

216982677 is a wasteful number, since it uses less digits than its factorization.

216982677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155347.

The product of its digits is 508032, while the sum is 48.

The square root of 216982677 is about 14730.3318699885. The cubic root of 216982677 is about 600.9085097668.

The spelling of 216982677 in words is "two hundred sixteen million, nine hundred eighty-two thousand, six hundred seventy-seven".