3785631 has 16 divisors (see below), whose sum is σ = 5326560. Its totient is φ = 2387840.

The previous prime is 3785629. The next prime is 3785641. The reversal of 3785631 is 1365873.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3785631 - 2¹ = 3785629 is a prime.

It is a super-2 number, since 2×3785631² = 28662004136322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 3785592 and 3785601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3785641) 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, 4201 + ... + 5021.

It is an arithmetic number, because the mean of its divisors is an integer number (332910).

Almost surely, 2^3785631 is an apocalyptic number.

3785631 is a deficient number, since it is larger than the sum of its proper divisors (1540929).

3785631 is a wasteful number, since it uses less digits than its factorization.

3785631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its digits is 15120, while the sum is 33.

The square root of 3785631 is about 1945.6698075470. The cubic root of 3785631 is about 155.8521363555.

The spelling of 3785631 in words is "three million, seven hundred eighty-five thousand, six hundred thirty-one".