216430463 has 4 divisors (see below), whose sum is σ = 227821560. Its totient is φ = 205039368.

The previous prime is 216430453. The next prime is 216430477. The reversal of 216430463 is 364034612.

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

It is a cyclic number.

It is not a de Polignac number, because 216430463 - 2⁶ = 216430399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216430453) 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, 5695520 + ... + 5695557.

It is an arithmetic number, because the mean of its divisors is an integer number (56955390).

Almost surely, 2^216430463 is an apocalyptic number.

216430463 is a deficient number, since it is larger than the sum of its proper divisors (11391097).

216430463 is a wasteful number, since it uses less digits than its factorization.

216430463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11391096.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 216430463 is about 14711.5758163427. The cubic root of 216430463 is about 600.3983123721.

The spelling of 216430463 in words is "two hundred sixteen million, four hundred thirty thousand, four hundred sixty-three".