36647 has 4 divisors (see below), whose sum is σ = 39480. Its totient is φ = 33816.

The previous prime is 36643. The next prime is 36653. The reversal of 36647 is 74663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74663 = 197 ⋅379.

It is a cyclic number.

It is not a de Polignac number, because 36647 - 2² = 36643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36647.

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, 1397 + ... + 1422.

It is an arithmetic number, because the mean of its divisors is an integer number (9870).

2³⁶⁶⁴⁷ is an apocalyptic number.

36647 is a deficient number, since it is larger than the sum of its proper divisors (2833).

36647 is a wasteful number, since it uses less digits than its factorization.

36647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832.

The product of its digits is 3024, while the sum is 26.

The square root of 36647 is about 191.4340617550. The cubic root of 36647 is about 33.2159090541.

The spelling of 36647 in words is "thirty-six thousand, six hundred forty-seven".