3649650 has 48 divisors (see below), whose sum is σ = 9374400. Its totient is φ = 938560.

The previous prime is 3649637. The next prime is 3649669. The reversal of 3649650 is 569463.

It is a happy number.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3931 + ... + 4769.

It is an arithmetic number, because the mean of its divisors is an integer number (195300).

Almost surely, 2^3649650 is an apocalyptic number.

3649650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3649650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4687200).

3649650 is an abundant number, since it is smaller than the sum of its proper divisors (5724750).

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

3649650 is a wasteful number, since it uses less digits than its factorization.

3649650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 3649650 is about 1910.4057160719. The cubic root of 3649650 is about 153.9632509153.

The spelling of 3649650 in words is "three million, six hundred forty-nine thousand, six hundred fifty".