216713345 has 8 divisors (see below), whose sum is σ = 260139840. Its totient is φ = 173314800.

The previous prime is 216713333. The next prime is 216713351. The reversal of 216713345 is 543317612.

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

It is not a de Polignac number, because 216713345 - 2⁸ = 216713089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18596 + ... + 27914.

It is an arithmetic number, because the mean of its divisors is an integer number (32517480).

Almost surely, 2^216713345 is an apocalyptic number.

It is an amenable number.

216713345 is a deficient number, since it is larger than the sum of its proper divisors (43426495).

216713345 is an equidigital number, since it uses as much as digits as its factorization.

216713345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13975.

The product of its digits is 15120, while the sum is 32.

The square root of 216713345 is about 14721.1869426348. The cubic root of 216713345 is about 600.6597788501.

The spelling of 216713345 in words is "two hundred sixteen million, seven hundred thirteen thousand, three hundred forty-five".