216626049 has 32 divisors (see below), whose sum is σ = 339830400. Its totient is φ = 136002240.

The previous prime is 216626023. The next prime is 216626051. The reversal of 216626049 is 940626612.

216626049 is a `hidden beast` number, since 21 + 6 + 626 + 0 + 4 + 9 = 666.

216626049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216626049 - 2¹⁵ = 216593281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216624049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91687 + ... + 94019.

It is an arithmetic number, because the mean of its divisors is an integer number (10619700).

Almost surely, 2^216626049 is an apocalyptic number.

It is an amenable number.

216626049 is a deficient number, since it is larger than the sum of its proper divisors (123204351).

216626049 is a wasteful number, since it uses less digits than its factorization.

216626049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542 (or 2536 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 216626049 is about 14718.2216656769. The cubic root of 216626049 is about 600.5791158615.

The spelling of 216626049 in words is "two hundred sixteen million, six hundred twenty-six thousand, forty-nine".