383647 has 4 divisors (see below), whose sum is σ = 418536. Its totient is φ = 348760.

The previous prime is 383633. The next prime is 383651. The reversal of 383647 is 746383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746383 = 11 ⋅67853.

It is a cyclic number.

It is not a de Polignac number, because 383647 - 2⁷ = 383519 is a prime.

It is a super-5 number, since 5×383647⁵ (a number of 29 digits) contains 55555 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17428 + ... + 17449.

It is an arithmetic number, because the mean of its divisors is an integer number (104634).

2³⁸³⁶⁴⁷ is an apocalyptic number.

383647 is a deficient number, since it is larger than the sum of its proper divisors (34889).

383647 is a wasteful number, since it uses less digits than its factorization.

383647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34888.

The product of its digits is 12096, while the sum is 31.

The square root of 383647 is about 619.3924442549. The cubic root of 383647 is about 72.6625445389.

It can be divided in two parts, 3836 and 47, that added together give a palindrome (3883).

The spelling of 383647 in words is "three hundred eighty-three thousand, six hundred forty-seven".