216463641 has 8 divisors (see below), whose sum is σ = 295657824. Its totient is φ = 140789280.

The previous prime is 216463613. The next prime is 216463651. The reversal of 216463641 is 146364612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216463641 - 2⁵ = 216463609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216463651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879811 + ... + 880056.

It is an arithmetic number, because the mean of its divisors is an integer number (36957228).

Almost surely, 2^216463641 is an apocalyptic number.

It is an amenable number.

216463641 is a deficient number, since it is larger than the sum of its proper divisors (79194183).

216463641 is a wasteful number, since it uses less digits than its factorization.

216463641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759911.

The product of its digits is 20736, while the sum is 33.

The square root of 216463641 is about 14712.7033885687. The cubic root of 216463641 is about 600.4289904278.

The spelling of 216463641 in words is "two hundred sixteen million, four hundred sixty-three thousand, six hundred forty-one".