5515664 has 80 divisors (see below), whose sum is σ = 13796736. Its totient is φ = 2090880.

The previous prime is 5515651. The next prime is 5515669. The reversal of 5515664 is 4665155.

It is a self number, because there is not a number n which added to its sum of digits gives 5515664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149054 + ... + 149090.

Almost surely, 2^5515664 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 5515664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6898368).

5515664 is an abundant number, since it is smaller than the sum of its proper divisors (8281072).

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

5515664 is a wasteful number, since it uses less digits than its factorization.

5515664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 57 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 5515664 is about 2348.5450815345. The cubic root of 5515664 is about 176.6848318017.

The spelling of 5515664 in words is "five million, five hundred fifteen thousand, six hundred sixty-four".