3665020 has 48 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 1379840.

The previous prime is 3665017. The next prime is 3665023. The reversal of 3665020 is 205663.

It is an interprime number because it is at equal distance from previous prime (3665017) and next prime (3665023).

It is a junction number, because it is equal to n+sod(n) for n = 3664982 and 3665000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665023) 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, 41136 + ... + 41224.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

Almost surely, 2^3665020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3665020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4082400).

3665020 is an abundant number, since it is smaller than the sum of its proper divisors (4499780).

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

3665020 is a wasteful number, since it uses less digits than its factorization.

3665020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 3665020 is about 1914.4241954175. The cubic root of 3665020 is about 154.1790799192.

It can be divided in two parts, 36 and 65020, that added together give a palindrome (65056).

The spelling of 3665020 in words is "three million, six hundred sixty-five thousand, twenty".