3555623 has 4 divisors (see below), whose sum is σ = 3608760. Its totient is φ = 3502488.

The previous prime is 3555613. The next prime is 3555647. The reversal of 3555623 is 3265553.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3265553 = 277 ⋅11789.

It is a cyclic number.

It is not a de Polignac number, because 3555623 - 2²⁰ = 2507047 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3555613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26468 + ... + 26601.

It is an arithmetic number, because the mean of its divisors is an integer number (902190).

Almost surely, 2^3555623 is an apocalyptic number.

3555623 is a deficient number, since it is larger than the sum of its proper divisors (53137).

3555623 is an equidigital number, since it uses as much as digits as its factorization.

3555623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53136.

The product of its digits is 13500, while the sum is 29.

The square root of 3555623 is about 1885.6359669883. The cubic root of 3555623 is about 152.6295307254.

The spelling of 3555623 in words is "three million, five hundred fifty-five thousand, six hundred twenty-three".