216733707 has 6 divisors (see below), whose sum is σ = 313059812. Its totient is φ = 144489132.

The previous prime is 216733691. The next prime is 216733721. The reversal of 216733707 is 707337612.

216733707 is a `hidden beast` number, since 216 + 73 + 370 + 7 = 666.

It is not a de Polignac number, because 216733707 - 2⁴ = 216733691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216733607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12040753 + ... + 12040770.

Almost surely, 2^216733707 is an apocalyptic number.

216733707 is a deficient number, since it is larger than the sum of its proper divisors (96326105).

216733707 is a wasteful number, since it uses less digits than its factorization.

216733707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24081529 (or 24081526 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 36.

The square root of 216733707 is about 14721.8785146462. The cubic root of 216733707 is about 600.6785905687.

The spelling of 216733707 in words is "two hundred sixteen million, seven hundred thirty-three thousand, seven hundred seven".