216893715 has 8 divisors (see below), whose sum is σ = 347029968. Its totient is φ = 115676640.

The previous prime is 216893689. The next prime is 216893717. The reversal of 216893715 is 517398612.

216893715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 216893715 - 2⁷ = 216893587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216893717) 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, 7229776 + ... + 7229805.

It is an arithmetic number, because the mean of its divisors is an integer number (43378746).

Almost surely, 2^216893715 is an apocalyptic number.

216893715 is a deficient number, since it is larger than the sum of its proper divisors (130136253).

216893715 is a wasteful number, since it uses less digits than its factorization.

216893715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14459589.

The product of its digits is 90720, while the sum is 42.

The square root of 216893715 is about 14727.3118728436. The cubic root of 216893715 is about 600.8263752064.

The spelling of 216893715 in words is "two hundred sixteen million, eight hundred ninety-three thousand, seven hundred fifteen".