536216821 has 8 divisors (see below), whose sum is σ = 613039680. Its totient is φ = 459449088.

The previous prime is 536216801. The next prime is 536216831. The reversal of 536216821 is 128612635.

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

It is not a de Polignac number, because 536216821 - 2⁷ = 536216693 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 (536216801) 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, 9750 + ... + 34168.

It is an arithmetic number, because the mean of its divisors is an integer number (76629960).

Almost surely, 2^536216821 is an apocalyptic number.

It is an amenable number.

536216821 is a deficient number, since it is larger than the sum of its proper divisors (76822859).

536216821 is a wasteful number, since it uses less digits than its factorization.

536216821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27563.

The product of its digits is 17280, while the sum is 34.

The square root of 536216821 is about 23156.3559525241. The cubic root of 536216821 is about 812.4191362837.

The spelling of 536216821 in words is "five hundred thirty-six million, two hundred sixteen thousand, eight hundred twenty-one".