12693543 has 8 divisors (see below), whose sum is σ = 17920368. Its totient is φ = 7964544.

The previous prime is 12693533. The next prime is 12693547. The reversal of 12693543 is 34539621.

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

It is not a de Polignac number, because 12693543 - 2¹⁸ = 12431399 is a prime.

It is a super-2 number, since 2×12693543² = 322252067785698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12693547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124396 + ... + 124497.

It is an arithmetic number, because the mean of its divisors is an integer number (2240046).

Almost surely, 2^12693543 is an apocalyptic number.

12693543 is a deficient number, since it is larger than the sum of its proper divisors (5226825).

12693543 is a wasteful number, since it uses less digits than its factorization.

12693543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248913.

The product of its digits is 19440, while the sum is 33.

The square root of 12693543 is about 3562.7998821152. The cubic root of 12693543 is about 233.2711083507.

The spelling of 12693543 in words is "twelve million, six hundred ninety-three thousand, five hundred forty-three".