3656500 has 48 divisors (see below), whose sum is σ = 8176896. Its totient is φ = 1428000.

The previous prime is 3656491. The next prime is 3656509. The reversal of 3656500 is 56563.

It is an interprime number because it is at equal distance from previous prime (3656491) and next prime (3656509).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656509) 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, 35449 + ... + 35551.

It is an arithmetic number, because the mean of its divisors is an integer number (170352).

Almost surely, 2^3656500 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 3656500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4088448).

3656500 is an abundant number, since it is smaller than the sum of its proper divisors (4520396).

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

3656500 is a wasteful number, since it uses less digits than its factorization.

3656500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 3656500 is about 1912.1976885249. The cubic root of 3656500 is about 154.0595148616.

The spelling of 3656500 in words is "three million, six hundred fifty-six thousand, five hundred".