3655340 has 48 divisors (see below), whose sum is σ = 8763552. Its totient is φ = 1268736.

The previous prime is 3655339. The next prime is 3655343. The reversal of 3655340 is 435563.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (3655343) 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 15 ways as a sum of consecutive naturals, for example, 4007 + ... + 4833.

It is an arithmetic number, because the mean of its divisors is an integer number (182574).

Almost surely, 2^3655340 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 3655340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4381776).

3655340 is an abundant number, since it is smaller than the sum of its proper divisors (5108212).

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

3655340 is a wasteful number, since it uses less digits than its factorization.

3655340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 3655340 is about 1911.8943485454. The cubic root of 3655340 is about 154.0432216907.

The spelling of 3655340 in words is "three million, six hundred fifty-five thousand, three hundred forty".