216432763 has 4 divisors (see below), whose sum is σ = 229164120. Its totient is φ = 203701408.

The previous prime is 216432751. The next prime is 216432871. The reversal of 216432763 is 367234612.

216432763 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216432763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216432703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6365653 + ... + 6365686.

It is an arithmetic number, because the mean of its divisors is an integer number (57291030).

Almost surely, 2^216432763 is an apocalyptic number.

216432763 is a deficient number, since it is larger than the sum of its proper divisors (12731357).

216432763 is a wasteful number, since it uses less digits than its factorization.

216432763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12731356.

The product of its digits is 36288, while the sum is 34.

The square root of 216432763 is about 14711.6539858712. The cubic root of 216432763 is about 600.4004391695.

The spelling of 216432763 in words is "two hundred sixteen million, four hundred thirty-two thousand, seven hundred sixty-three".