12655403 has 4 divisors (see below), whose sum is σ = 12691608. Its totient is φ = 12619200.

The previous prime is 12655399. The next prime is 12655411. The reversal of 12655403 is 30455621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30455621 = 7 ⋅4350803.

It is a cyclic number.

It is not a de Polignac number, because 12655403 - 2² = 12655399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12655003) 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, 17573 + ... + 18278.

It is an arithmetic number, because the mean of its divisors is an integer number (3172902).

Almost surely, 2^12655403 is an apocalyptic number.

12655403 is a deficient number, since it is larger than the sum of its proper divisors (36205).

12655403 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 8 representation: 12655403 = (60215453)₈.

12655403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36204.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 12655403 is about 3557.4433235120. The cubic root of 12655403 is about 233.0372391621.

The spelling of 12655403 in words is "twelve million, six hundred fifty-five thousand, four hundred three".