3649500 has 72 divisors (see below), whose sum is σ = 11527152. Its totient is φ = 972000.

The previous prime is 3649487. The next prime is 3649511. The reversal of 3649500 is 59463.

It is a happy number.

It is a congruent 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, 4095 + ... + 4905.

Almost surely, 2^3649500 is an apocalyptic number.

3649500 is a gapful number since it is divisible by the number (30) 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 3649500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5763576).

3649500 is an abundant number, since it is smaller than the sum of its proper divisors (7877652).

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

3649500 is a wasteful number, since it uses less digits than its factorization.

3649500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3649500 is about 1910.3664569920. The cubic root of 3649500 is about 153.9611415985.

The spelling of 3649500 in words is "three million, six hundred forty-nine thousand, five hundred".