216436613 has 8 divisors (see below), whose sum is σ = 221506560. Its totient is φ = 211422960.

The previous prime is 216436609. The next prime is 216436621. The reversal of 216436613 is 316634612.

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 216436613 - 2² = 216436609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216436613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216432613) 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, 6245 + ... + 21722.

It is an arithmetic number, because the mean of its divisors is an integer number (27688320).

Almost surely, 2^216436613 is an apocalyptic number.

It is an amenable number.

216436613 is a deficient number, since it is larger than the sum of its proper divisors (5069947).

216436613 is a wasteful number, since it uses less digits than its factorization.

216436613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28147.

The product of its digits is 15552, while the sum is 32.

The square root of 216436613 is about 14711.7848339350. The cubic root of 216436613 is about 600.4039992096.

The spelling of 216436613 in words is "two hundred sixteen million, four hundred thirty-six thousand, six hundred thirteen".