3645155 has 16 divisors (see below), whose sum is σ = 4726080. Its totient is φ = 2690688.

The previous prime is 3645151. The next prime is 3645193. The reversal of 3645155 is 5515463.

It is a cyclic number.

It is not a de Polignac number, because 3645155 - 2² = 3645151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2789 + ... + 3881.

It is an arithmetic number, because the mean of its divisors is an integer number (295380).

Almost surely, 2^3645155 is an apocalyptic number.

3645155 is a deficient number, since it is larger than the sum of its proper divisors (1080925).

3645155 is a wasteful number, since it uses less digits than its factorization.

3645155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150.

The product of its digits is 9000, while the sum is 29.

The square root of 3645155 is about 1909.2289019392. The cubic root of 3645155 is about 153.9000166208.

The spelling of 3645155 in words is "three million, six hundred forty-five thousand, one hundred fifty-five".