3619664 has 30 divisors (see below), whose sum is σ = 7290270. Its totient is φ = 1740928.

The previous prime is 3619663. The next prime is 3619667. The reversal of 3619664 is 4669163.

It can be written as a sum of positive squares in 3 ways, for example, as 85264 + 3534400 = 292^2 + 1880^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3619663) 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, 13322 + ... + 13590.

It is an arithmetic number, because the mean of its divisors is an integer number (243009).

Almost surely, 2^3619664 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 3619664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3645135).

3619664 is an abundant number, since it is smaller than the sum of its proper divisors (3670606).

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

3619664 is a wasteful number, since it uses less digits than its factorization.

3619664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 300 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 3619664 is about 1902.5414581554. The cubic root of 3619664 is about 153.5404300976.

The spelling of 3619664 in words is "three million, six hundred nineteen thousand, six hundred sixty-four".