216449601 has 8 divisors (see below), whose sum is σ = 288728544. Its totient is φ = 144235200.

The previous prime is 216449581. The next prime is 216449609. The reversal of 216449601 is 106944612.

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

It is not a de Polignac number, because 216449601 - 2⁷ = 216449473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216449609) 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, 7675 + ... + 22176.

It is an arithmetic number, because the mean of its divisors is an integer number (36091068).

Almost surely, 2^216449601 is an apocalyptic number.

It is an amenable number.

216449601 is a deficient number, since it is larger than the sum of its proper divisors (72278943).

216449601 is a wasteful number, since it uses less digits than its factorization.

216449601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32271.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 216449601 is about 14712.2262421430. The cubic root of 216449601 is about 600.4160087168.

The spelling of 216449601 in words is "two hundred sixteen million, four hundred forty-nine thousand, six hundred one".