3639000 has 64 divisors (see below), whose sum is σ = 11363040. Its totient is φ = 969600.

The previous prime is 3638993. The next prime is 3639017. The reversal of 3639000 is 9363.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2394 + ... + 3606.

Almost surely, 2^3639000 is an apocalyptic number.

3639000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3639000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5681520).

3639000 is an abundant number, since it is smaller than the sum of its proper divisors (7724040).

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

3639000 is a wasteful number, since it uses less digits than its factorization.

3639000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 3639000 is about 1907.6163136228. The cubic root of 3639000 is about 153.8133455681.

The spelling of 3639000 in words is "three million, six hundred thirty-nine thousand".