216420679 has 8 divisors (see below), whose sum is σ = 219012768. Its totient is φ = 213837600.

The previous prime is 216420671. The next prime is 216420683. The reversal of 216420679 is 976024612.

216420679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 216420679 - 2³ = 216420671 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 (216420671) 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, 54334 + ... + 58180.

It is an arithmetic number, because the mean of its divisors is an integer number (27376596).

Almost surely, 2^216420679 is an apocalyptic number.

216420679 is a deficient number, since it is larger than the sum of its proper divisors (2592089).

216420679 is a wasteful number, since it uses less digits than its factorization.

216420679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 216420679 is about 14711.2432853243. The cubic root of 216420679 is about 600.3892649926.

The spelling of 216420679 in words is "two hundred sixteen million, four hundred twenty thousand, six hundred seventy-nine".