216344613 has 8 divisors (see below), whose sum is σ = 293188576. Its totient is φ = 141865200.

The previous prime is 216344593. The next prime is 216344633. The reversal of 216344613 is 316443612.

It is an interprime number because it is at equal distance from previous prime (216344593) and next prime (216344633).

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

It is not a de Polignac number, because 216344613 - 2⁶ = 216344549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216344633) 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, 590923 + ... + 591288.

It is an arithmetic number, because the mean of its divisors is an integer number (36648572).

Almost surely, 2^216344613 is an apocalyptic number.

It is an amenable number.

216344613 is a deficient number, since it is larger than the sum of its proper divisors (76843963).

216344613 is a wasteful number, since it uses less digits than its factorization.

216344613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182275.

The product of its digits is 10368, while the sum is 30.

The square root of 216344613 is about 14708.6577565732. The cubic root of 216344613 is about 600.3189165681.

The spelling of 216344613 in words is "two hundred sixteen million, three hundred forty-four thousand, six hundred thirteen".