3549636 has 48 divisors (see below), whose sum is σ = 9609600. Its totient is φ = 1130976.

The previous prime is 3549631. The next prime is 3549641. The reversal of 3549636 is 6369453.

It is an interprime number because it is at equal distance from previous prime (3549631) and next prime (3549641).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 3 + 5⁹ + 4⁵ + 9³ + 6³ + 3¹³ + 6³ .

It is a self number, because there is not a number n which added to its sum of digits gives 3549636.

It is not an unprimeable number, because it can be changed into a prime (3549631) 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, 1770 + ... + 3198.

It is an arithmetic number, because the mean of its divisors is an integer number (200200).

Almost surely, 2^3549636 is an apocalyptic number.

3549636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3549636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4804800).

3549636 is an abundant number, since it is smaller than the sum of its proper divisors (6059964).

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

3549636 is a wasteful number, since it uses less digits than its factorization.

3549636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465 (or 1457 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 3549636 is about 1884.0477700950. The cubic root of 3549636 is about 152.5438161295.

The spelling of 3549636 in words is "three million, five hundred forty-nine thousand, six hundred thirty-six".