36500821 has 8 divisors (see below), whose sum is σ = 43153920. Its totient is φ = 30207408.

The previous prime is 36500801. The next prime is 36500897. The reversal of 36500821 is 12800563.

It is a happy number.

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

It is not a de Polignac number, because 36500821 - 2¹⁵ = 36468053 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 (36500801) 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, 89701 + ... + 90106.

It is an arithmetic number, because the mean of its divisors is an integer number (5394240).

Almost surely, 2^36500821 is an apocalyptic number.

It is an amenable number.

36500821 is a deficient number, since it is larger than the sum of its proper divisors (6653099).

36500821 is a wasteful number, since it uses less digits than its factorization.

36500821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179843.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 36500821 is about 6041.5909328587. The cubic root of 36500821 is about 331.7168589252.

The spelling of 36500821 in words is "thirty-six million, five hundred thousand, eight hundred twenty-one".