10639 has 2 divisors, whose sum is σ = 10640. Its totient is φ = 10638.

The previous prime is 10631. The next prime is 10651. The reversal of 10639 is 93601.

It is a weak prime.

It is an emirp because it is prime and its reverse (93601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10639 - 2³ = 10631 is a prime.

It is a super-2 number, since 2×10639² = 226376642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5319 + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (5320).

2¹⁰⁶³⁹ is an apocalyptic number.

10639 is a deficient number, since it is larger than the sum of its proper divisors (1).

10639 is an equidigital number, since it uses as much as digits as its factorization.

10639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 10639 is about 103.1455282598. The cubic root of 10639 is about 21.9937999057.

Adding to 10639 its product of nonzero digits (162), we get a palindrome (10801).

The spelling of 10639 in words is "ten thousand, six hundred thirty-nine".