3689424 has 30 divisors (see below), whose sum is σ = 10325666. Its totient is φ = 1229760.

The previous prime is 3689423. The next prime is 3689461. The reversal of 3689424 is 4249863.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2624400 + 1065024 = 1620^2 + 1032^2 .

It is a super-2 number, since 2×3689424² = 27223698903552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12667 + ... + 12954.

Almost surely, 2^3689424 is an apocalyptic number.

It is an amenable number.

3689424 is an abundant number, since it is smaller than the sum of its proper divisors (6636242).

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

3689424 is a wasteful number, since it uses less digits than its factorization.

3689424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25635 (or 25626 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3689424 is about 1920.7873385672. The cubic root of 3689424 is about 154.5205301527.

The spelling of 3689424 in words is "three million, six hundred eighty-nine thousand, four hundred twenty-four".