3655520 has 96 divisors (see below), whose sum is σ = 9870336. Its totient is φ = 1267200.

The previous prime is 3655513. The next prime is 3655541. The reversal of 3655520 is 255563.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3655520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54527 + ... + 54593.

It is an arithmetic number, because the mean of its divisors is an integer number (102816).

Almost surely, 2^3655520 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 3655520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4935168).

3655520 is an abundant number, since it is smaller than the sum of its proper divisors (6214816).

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

3655520 is a wasteful number, since it uses less digits than its factorization.

3655520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 3655520 is about 1911.9414216968. The cubic root of 3655520 is about 154.0457501673.

It can be divided in two parts, 365 and 5520, that added together give a palindrome (5885).

The spelling of 3655520 in words is "three million, six hundred fifty-five thousand, five hundred twenty".