3655020 has 24 divisors (see below), whose sum is σ = 10234224. Its totient is φ = 974656.

The previous prime is 3655019. The next prime is 3655021. The reversal of 3655020 is 205563.

It is an interprime number because it is at equal distance from previous prime (3655019) and next prime (3655021).

It is not an unprimeable number, because it can be changed into a prime (3655021) 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, 30399 + ... + 30518.

It is an arithmetic number, because the mean of its divisors is an integer number (426426).

Almost surely, 2^3655020 is an apocalyptic number.

3655020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3655020 is an abundant number, since it is smaller than the sum of its proper divisors (6579204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3655020 is a wasteful number, since it uses less digits than its factorization.

3655020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60929 (or 60927 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 3655020 is about 1911.8106600812. The cubic root of 3655020 is about 154.0387264163.

The spelling of 3655020 in words is "three million, six hundred fifty-five thousand, twenty".