36705021 has 16 divisors (see below), whose sum is σ = 50181120. Its totient is φ = 23856560.

The previous prime is 36705001. The next prime is 36705037. The reversal of 36705021 is 12050763.

It is a cyclic number.

It is not a de Polignac number, because 36705021 - 2¹¹ = 36702973 is a prime.

It is a super-2 number, since 2×36705021² = 2694517133220882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36704982 and 36705000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36705001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22396 + ... + 23978.

It is an arithmetic number, because the mean of its divisors is an integer number (3136320).

Almost surely, 2^36705021 is an apocalyptic number.

It is an amenable number.

36705021 is a deficient number, since it is larger than the sum of its proper divisors (13476099).

36705021 is a wasteful number, since it uses less digits than its factorization.

36705021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 36705021 is about 6058.4668852772. The cubic root of 36705021 is about 332.3342939747.

Adding to 36705021 its reverse (12050763), we get a palindrome (48755784).

The spelling of 36705021 in words is "thirty-six million, seven hundred five thousand, twenty-one".