13840623 has 6 divisors (see below), whose sum is σ = 19992024. Its totient is φ = 9227076.

The previous prime is 13840621. The next prime is 13840643. The reversal of 13840623 is 32604831.

It is a happy number.

13840623 is a `hidden beast` number, since 1 + 38 + 4 + 0 + 623 = 666.

It is not a de Polignac number, because 13840623 - 2¹ = 13840621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 768915 + ... + 768932.

It is an arithmetic number, because the mean of its divisors is an integer number (3332004).

Almost surely, 2^13840623 is an apocalyptic number.

13840623 is a deficient number, since it is larger than the sum of its proper divisors (6151401).

13840623 is a wasteful number, since it uses less digits than its factorization.

13840623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537853 (or 1537850 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13840623 is about 3720.2987783241. The cubic root of 13840623 is about 240.0961593839.

The spelling of 13840623 in words is "thirteen million, eight hundred forty thousand, six hundred twenty-three".