216607601 has 4 divisors (see below), whose sum is σ = 247551552. Its totient is φ = 185663652.

The previous prime is 216607519. The next prime is 216607613. The reversal of 216607601 is 106706612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216607601 - 2¹⁴ = 216591217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216607621) 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, 15471965 + ... + 15471978.

It is an arithmetic number, because the mean of its divisors is an integer number (61887888).

Almost surely, 2^216607601 is an apocalyptic number.

It is an amenable number.

216607601 is a deficient number, since it is larger than the sum of its proper divisors (30943951).

216607601 is an equidigital number, since it uses as much as digits as its factorization.

216607601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30943950.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 216607601 is about 14717.5949461860. The cubic root of 216607601 is about 600.5620668222.

The spelling of 216607601 in words is "two hundred sixteen million, six hundred seven thousand, six hundred one".