216600634 has 8 divisors (see below), whose sum is σ = 325613268. Its totient is φ = 108062880.

The previous prime is 216600613. The next prime is 216600641. The reversal of 216600634 is 436006612.

It can be written as a sum of positive squares in 2 ways, for example, as 216237025 + 363609 = 14705^2 + 603^2 .

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, 117577 + ... + 119404.

Almost surely, 2^216600634 is an apocalyptic number.

216600634 is a deficient number, since it is larger than the sum of its proper divisors (109012634).

216600634 is a wasteful number, since it uses less digits than its factorization.

216600634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237440.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 216600634 is about 14717.3582547956. The cubic root of 216600634 is about 600.5556278965. Note that the first 3 decimals are identical.

The spelling of 216600634 in words is "two hundred sixteen million, six hundred thousand, six hundred thirty-four".