12533665 has 8 divisors (see below), whose sum is σ = 15295680. Its totient is φ = 9856752.

The previous prime is 12533663. The next prime is 12533671. The reversal of 12533665 is 56633521.

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

It is a cyclic number.

It is not a de Polignac number, because 12533665 - 2¹ = 12533663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12533663) 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, 20949 + ... + 21538.

It is an arithmetic number, because the mean of its divisors is an integer number (1911960).

Almost surely, 2^12533665 is an apocalyptic number.

It is an amenable number.

12533665 is a deficient number, since it is larger than the sum of its proper divisors (2762015).

12533665 is an equidigital number, since it uses as much as digits as its factorization.

12533665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42551.

The product of its digits is 16200, while the sum is 31.

The square root of 12533665 is about 3540.2916546522. The cubic root of 12533665 is about 232.2876003721.

The spelling of 12533665 in words is "twelve million, five hundred thirty-three thousand, six hundred sixty-five".