3693638 has 16 divisors (see below), whose sum is σ = 6281520. Its totient is φ = 1614816.

The previous prime is 3693637. The next prime is 3693653. The reversal of 3693638 is 8363963.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3693637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3245 + ... + 4232.

It is an arithmetic number, because the mean of its divisors is an integer number (392595).

Almost surely, 2^3693638 is an apocalyptic number.

3693638 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3693638 is a deficient number, since it is larger than the sum of its proper divisors (2587882).

3693638 is a wasteful number, since it uses less digits than its factorization.

3693638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511.

The product of its digits is 69984, while the sum is 38.

The square root of 3693638 is about 1921.8839715238. The cubic root of 3693638 is about 154.5793380461.

The spelling of 3693638 in words is "three million, six hundred ninety-three thousand, six hundred thirty-eight".