13642623 has 6 divisors (see below), whose sum is σ = 19706024. Its totient is φ = 9095076.

The previous prime is 13642613. The next prime is 13642631. The reversal of 13642623 is 32624631.

13642623 is a `hidden beast` number, since 1 + 36 + 4 + 2 + 623 = 666.

It is not a de Polignac number, because 13642623 - 2¹⁷ = 13511551 is a prime.

It is a super-2 number, since 2×13642623² = 372242324640258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13642613) 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, 757915 + ... + 757932.

Almost surely, 2^13642623 is an apocalyptic number.

13642623 is a deficient number, since it is larger than the sum of its proper divisors (6063401).

13642623 is a wasteful number, since it uses less digits than its factorization.

13642623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515853 (or 1515850 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 13642623 is about 3693.5921539878. The cubic root of 13642623 is about 238.9457402661.

The spelling of 13642623 in words is "thirteen million, six hundred forty-two thousand, six hundred twenty-three".