36436621 has 8 divisors (see below), whose sum is σ = 39287864. Its totient is φ = 33592320.

The previous prime is 36436607. The next prime is 36436633. The reversal of 36436621 is 12663463.

It can be written as a sum of positive squares in 4 ways, for example, as 12524521 + 23912100 = 3539^2 + 4890^2 .

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

It is a 8-Lehmer number, since φ(36436621) divides (36436621-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 36436621 - 2¹⁹ = 35912333 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 (36436651) 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, 15781 + ... + 17941.

It is an arithmetic number, because the mean of its divisors is an integer number (4910983).

Almost surely, 2^36436621 is an apocalyptic number.

It is an amenable number.

36436621 is a deficient number, since it is larger than the sum of its proper divisors (2851243).

36436621 is a wasteful number, since it uses less digits than its factorization.

36436621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471.

The product of its digits is 15552, while the sum is 31.

The square root of 36436621 is about 6036.2754244650. The cubic root of 36436621 is about 331.5222631170.

The spelling of 36436621 in words is "thirty-six million, four hundred thirty-six thousand, six hundred twenty-one".