36649 has 4 divisors (see below), whose sum is σ = 37264. Its totient is φ = 36036.

The previous prime is 36643. The next prime is 36653. The reversal of 36649 is 94663.

36649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 94663 = 181 ⋅523.

It is a cyclic number.

It is not a de Polignac number, because 36649 - 2⁹ = 36137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36643) 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, 207 + ... + 340.

It is an arithmetic number, because the mean of its divisors is an integer number (9316).

2³⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

36649 is a deficient number, since it is larger than the sum of its proper divisors (615).

36649 is an equidigital number, since it uses as much as digits as its factorization.

36649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614.

The product of its digits is 3888, while the sum is 28.

The square root of 36649 is about 191.4392854145. The cubic root of 36649 is about 33.2165132928.

Subtracting from 36649 its product of digits (3888), we obtain a square (32761 = 181²).

The spelling of 36649 in words is "thirty-six thousand, six hundred forty-nine".