216424707 has 16 divisors (see below), whose sum is σ = 296980992. Its totient is φ = 140123360.

The previous prime is 216424699. The next prime is 216424711. The reversal of 216424707 is 707424612.

It is a cyclic number.

It is not a de Polignac number, because 216424707 - 2³ = 216424699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216422707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12613 + ... + 24329.

It is an arithmetic number, because the mean of its divisors is an integer number (18561312).

Almost surely, 2^216424707 is an apocalyptic number.

216424707 is a deficient number, since it is larger than the sum of its proper divisors (80556285).

216424707 is a wasteful number, since it uses less digits than its factorization.

216424707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11898.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 216424707 is about 14711.3801867806. The cubic root of 216424707 is about 600.3929897644.

The spelling of 216424707 in words is "two hundred sixteen million, four hundred twenty-four thousand, seven hundred seven".