13643534 has 8 divisors (see below), whose sum is σ = 21125568. Its totient is φ = 6601680.

The previous prime is 13643533. The next prime is 13643549. The reversal of 13643534 is 43534631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13643534² = 372292040018312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13643497 and 13643506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109967 + ... + 110090.

It is an arithmetic number, because the mean of its divisors is an integer number (2640696).

Almost surely, 2^13643534 is an apocalyptic number.

13643534 is a deficient number, since it is larger than the sum of its proper divisors (7482034).

13643534 is a wasteful number, since it uses less digits than its factorization.

13643534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220090.

The product of its digits is 12960, while the sum is 29.

The square root of 13643534 is about 3693.7154736119. The cubic root of 13643534 is about 238.9510587625.

The spelling of 13643534 in words is "thirteen million, six hundred forty-three thousand, five hundred thirty-four".