216276646 has 8 divisors (see below), whose sum is σ = 334880064. Its totient is φ = 104649960.

The previous prime is 216276631. The next prime is 216276649. The reversal of 216276646 is 646672612.

216276646 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 junction number, because it is equal to n+sod(n) for n = 216276599 and 216276608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216276649) 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, 1744105 + ... + 1744228.

It is an arithmetic number, because the mean of its divisors is an integer number (41860008).

Almost surely, 2^216276646 is an apocalyptic number.

216276646 is a deficient number, since it is larger than the sum of its proper divisors (118603418).

216276646 is a wasteful number, since it uses less digits than its factorization.

216276646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488366.

The product of its digits is 145152, while the sum is 40.

The square root of 216276646 is about 14706.3471331259. The cubic root of 216276646 is about 600.2560444236.

The spelling of 216276646 in words is "two hundred sixteen million, two hundred seventy-six thousand, six hundred forty-six".