3555645 has 8 divisors (see below), whose sum is σ = 5689056. Its totient is φ = 1896336.

The previous prime is 3555613. The next prime is 3555647. The reversal of 3555645 is 5465553.

3555645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3555645 - 2⁵ = 3555613 is a prime.

It is a super-2 number, since 2×3555645² = 25285222732050, which contains 22 as substring.

3555645 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3555647) 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 7 ways as a sum of consecutive naturals, for example, 118507 + ... + 118536.

It is an arithmetic number, because the mean of its divisors is an integer number (711132).

Almost surely, 2^3555645 is an apocalyptic number.

It is an amenable number.

3555645 is a deficient number, since it is larger than the sum of its proper divisors (2133411).

3555645 is a wasteful number, since it uses less digits than its factorization.

3555645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237051.

The product of its digits is 45000, while the sum is 33.

The square root of 3555645 is about 1885.6418005549. The cubic root of 3555645 is about 152.6298455172.

The spelling of 3555645 in words is "three million, five hundred fifty-five thousand, six hundred forty-five".