216413507 has 2 divisors, whose sum is σ = 216413508. Its totient is φ = 216413506.

The previous prime is 216413503. The next prime is 216413531. The reversal of 216413507 is 705314612.

216413507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216413507 - 2² = 216413503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216413507.

It is not a weakly prime, because it can be changed into another prime (216413503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108206753 + 108206754.

It is an arithmetic number, because the mean of its divisors is an integer number (108206754).

Almost surely, 2^216413507 is an apocalyptic number.

216413507 is a deficient number, since it is larger than the sum of its proper divisors (1).

216413507 is an equidigital number, since it uses as much as digits as its factorization.

216413507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 216413507 is about 14710.9995241656. Note that the first 3 decimals coincide. The cubic root of 216413507 is about 600.3826327869.

The spelling of 216413507 in words is "two hundred sixteen million, four hundred thirteen thousand, five hundred seven".