3685788 has 36 divisors (see below), whose sum is σ = 9537528. Its totient is φ = 1199520.

The previous prime is 3685783. The next prime is 3685811. The reversal of 3685788 is 8875863.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358 + ... + 2738.

Almost surely, 2^3685788 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 3685788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4768764).

3685788 is an abundant number, since it is smaller than the sum of its proper divisors (5851740).

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

3685788 is a wasteful number, since it uses less digits than its factorization.

3685788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2429 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 3685788 is about 1919.8406183848. The cubic root of 3685788 is about 154.4697524599.

The spelling of 3685788 in words is "three million, six hundred eighty-five thousand, seven hundred eighty-eight".