216746522 has 8 divisors (see below), whose sum is σ = 336330900. Its totient is φ = 104636224.

The previous prime is 216746501. The next prime is 216746557. The reversal of 216746522 is 225647612.

216746522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205664281 + 11082241 = 14341^2 + 3329^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868447 + ... + 1868562.

Almost surely, 2^216746522 is an apocalyptic number.

216746522 is a deficient number, since it is larger than the sum of its proper divisors (119584378).

216746522 is a wasteful number, since it uses less digits than its factorization.

216746522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737040.

The product of its digits is 40320, while the sum is 35.

The square root of 216746522 is about 14722.3137447889. The cubic root of 216746522 is about 600.6904292817.

The spelling of 216746522 in words is "two hundred sixteen million, seven hundred forty-six thousand, five hundred twenty-two".