368639 has 4 divisors (see below), whose sum is σ = 377256. Its totient is φ = 360024.

The previous prime is 368633. The next prime is 368647. The reversal of 368639 is 936863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936863 = 883 ⋅1061.

It is a cyclic number.

It is not a de Polignac number, because 368639 - 2¹² = 364543 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 6⁵ + 6⁷ + 8 + 3⁹ + 9⁵ .

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 368599 and 368608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (368633) 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, 4244 + ... + 4329.

It is an arithmetic number, because the mean of its divisors is an integer number (94314).

2³⁶⁸⁶³⁹ is an apocalyptic number.

368639 is a deficient number, since it is larger than the sum of its proper divisors (8617).

368639 is an equidigital number, since it uses as much as digits as its factorization.

368639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616.

The product of its digits is 23328, while the sum is 35.

The square root of 368639 is about 607.1564872420. The cubic root of 368639 is about 71.7024111097.

The spelling of 368639 in words is "three hundred sixty-eight thousand, six hundred thirty-nine".