216649027 has 8 divisors (see below), whose sum is σ = 248691456. Its totient is φ = 184879752.

The previous prime is 216649021. The next prime is 216649031. The reversal of 216649027 is 720946612.

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 216649027 - 2³ = 216649019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216649021) 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, 66583 + ... + 69760.

It is an arithmetic number, because the mean of its divisors is an integer number (31086432).

Almost surely, 2^216649027 is an apocalyptic number.

216649027 is a deficient number, since it is larger than the sum of its proper divisors (32042429).

216649027 is a wasteful number, since it uses less digits than its factorization.

216649027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136577.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 216649027 is about 14719.0022420000. The cubic root of 216649027 is about 600.6003500253.

The spelling of 216649027 in words is "two hundred sixteen million, six hundred forty-nine thousand, twenty-seven".