36138647 has 4 divisors (see below), whose sum is σ = 36152160. Its totient is φ = 36125136.

The previous prime is 36138607. The next prime is 36138659. The reversal of 36138647 is 74683163.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74683163 = 4159 ⋅17957.

It is a cyclic number.

It is not a de Polignac number, because 36138647 - 2⁸ = 36138391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36138647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36138607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1247 + ... + 8592.

It is an arithmetic number, because the mean of its divisors is an integer number (9038040).

Almost surely, 2^36138647 is an apocalyptic number.

36138647 is a deficient number, since it is larger than the sum of its proper divisors (13513).

36138647 is an equidigital number, since it uses as much as digits as its factorization.

36138647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13512.

The product of its digits is 72576, while the sum is 38.

The square root of 36138647 is about 6011.5428136211. The cubic root of 36138647 is about 330.6160728981.

The spelling of 36138647 in words is "thirty-six million, one hundred thirty-eight thousand, six hundred forty-seven".