36586721 has 4 divisors (see below), whose sum is σ = 38177472. Its totient is φ = 34995972.

The previous prime is 36586709. The next prime is 36586741. The reversal of 36586721 is 12768563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12768563 = 89 ⋅143467.

It is not a de Polignac number, because 36586721 - 2¹⁴ = 36570337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36586741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795341 + ... + 795386.

It is an arithmetic number, because the mean of its divisors is an integer number (9544368).

Almost surely, 2^36586721 is an apocalyptic number.

It is an amenable number.

36586721 is a deficient number, since it is larger than the sum of its proper divisors (1590751).

36586721 is a wasteful number, since it uses less digits than its factorization.

36586721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590750.

The product of its digits is 60480, while the sum is 38.

The square root of 36586721 is about 6048.6958098420. The cubic root of 36586721 is about 331.9768727539.

The spelling of 36586721 in words is "thirty-six million, five hundred eighty-six thousand, seven hundred twenty-one".