3694638 has 8 divisors (see below), whose sum is σ = 7389288. Its totient is φ = 1231544.

The previous prime is 3694637. The next prime is 3694643. The reversal of 3694638 is 8364963.

It is a sphenic number, since it is the product of 3 distinct primes.

3694638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 3694596 and 3694605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3694631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307881 + ... + 307892.

It is an arithmetic number, because the mean of its divisors is an integer number (923661).

Almost surely, 2^3694638 is an apocalyptic number.

3694638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3694638 is a wasteful number, since it uses less digits than its factorization.

3694638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615778.

The product of its digits is 93312, while the sum is 39.

The square root of 3694638 is about 1922.1441153046. The cubic root of 3694638 is about 154.5932868404.

The spelling of 3694638 in words is "three million, six hundred ninety-four thousand, six hundred thirty-eight".