216545626 has 16 divisors (see below), whose sum is σ = 375192000. Its totient is φ = 92639680.

The previous prime is 216545579. The next prime is 216545653. The reversal of 216545626 is 626545612.

216545626 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289126 + ... + 289873.

It is an arithmetic number, because the mean of its divisors is an integer number (23449500).

Almost surely, 2^216545626 is an apocalyptic number.

216545626 is a deficient number, since it is larger than the sum of its proper divisors (158646374).

216545626 is a wasteful number, since it uses less digits than its factorization.

216545626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579029.

The product of its digits is 86400, while the sum is 37.

The square root of 216545626 is about 14715.4893224792. The cubic root of 216545626 is about 600.5047844612.

It can be divided in two parts, 2 and 16545626, that added together give a triangular number (16545628 = T₅₇₅₂).

The spelling of 216545626 in words is "two hundred sixteen million, five hundred forty-five thousand, six hundred twenty-six".