216536701 has 8 divisors (see below), whose sum is σ = 229937400. Its totient is φ = 203209728.

The previous prime is 216536693. The next prime is 216536729. The reversal of 216536701 is 107635612.

It can be written as a sum of positive squares in 4 ways, for example, as 159896025 + 56640676 = 12645^2 + 7526^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 216536701 - 2³ = 216536693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216536731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12316 + ... + 24181.

It is an arithmetic number, because the mean of its divisors is an integer number (28742175).

Almost surely, 2^216536701 is an apocalyptic number.

It is an amenable number.

216536701 is a deficient number, since it is larger than the sum of its proper divisors (13400699).

216536701 is a wasteful number, since it uses less digits than its factorization.

216536701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36863.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 216536701 is about 14715.1860674611. The cubic root of 216536701 is about 600.4965343464.

The spelling of 216536701 in words is "two hundred sixteen million, five hundred thirty-six thousand, seven hundred one".