3649688 has 16 divisors (see below), whose sum is σ = 7820880. Its totient is φ = 1564128.

The previous prime is 3649687. The next prime is 3649693. The reversal of 3649688 is 8869463.

3649688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32531 + ... + 32642.

It is an arithmetic number, because the mean of its divisors is an integer number (488805).

Almost surely, 2^3649688 is an apocalyptic number.

It is an amenable number.

3649688 is an abundant number, since it is smaller than the sum of its proper divisors (4171192).

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

3649688 is a wasteful number, since it uses less digits than its factorization.

3649688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65186 (or 65182 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 3649688 is about 1910.4156615773. The cubic root of 3649688 is about 153.9637852664.

The spelling of 3649688 in words is "three million, six hundred forty-nine thousand, six hundred eighty-eight".