3645061 has 8 divisors (see below), whose sum is σ = 4251200. Its totient is φ = 3124044.

The previous prime is 3645053. The next prime is 3645071. The reversal of 3645061 is 1605463.

It is not a de Polignac number, because 3645061 - 2³ = 3645053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4971 + ... + 5656.

It is an arithmetic number, because the mean of its divisors is an integer number (531400).

Almost surely, 2^3645061 is an apocalyptic number.

It is an amenable number.

3645061 is a deficient number, since it is larger than the sum of its proper divisors (606139).

3645061 is an equidigital number, since it uses as much as digits as its factorization.

3645061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648 (or 10634 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3645061 is about 1909.2042845123. The cubic root of 3645061 is about 153.8986937026.

The spelling of 3645061 in words is "three million, six hundred forty-five thousand, sixty-one".