3659864 has 24 divisors (see below), whose sum is σ = 7433460. Its totient is φ = 1688544.

The previous prime is 3659861. The next prime is 3659917. The reversal of 3659864 is 4689563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3659861) 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, 2 + ... + 2705.

Almost surely, 2^3659864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3659864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3716730).

3659864 is an abundant number, since it is smaller than the sum of its proper divisors (3773596).

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

3659864 is a wasteful number, since it uses less digits than its factorization.

3659864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739 (or 2722 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 3659864 is about 1913.0771024713. The cubic root of 3659864 is about 154.1067455792.

The spelling of 3659864 in words is "three million, six hundred fifty-nine thousand, eight hundred sixty-four".