216733706 has 8 divisors (see below), whose sum is σ = 371543520. Its totient is φ = 92885868.

The previous prime is 216733691. The next prime is 216733721. The reversal of 216733706 is 607337612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (216733691) and next prime (216733721).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7740476 + ... + 7740503.

It is an arithmetic number, because the mean of its divisors is an integer number (46442940).

Almost surely, 2^216733706 is an apocalyptic number.

216733706 is a deficient number, since it is larger than the sum of its proper divisors (154809814).

216733706 is a wasteful number, since it uses less digits than its factorization.

216733706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15480988.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 216733706 is about 14721.8784806831. The cubic root of 216733706 is about 600.6785896449.

The spelling of 216733706 in words is "two hundred sixteen million, seven hundred thirty-three thousand, seven hundred six".