5665920 has 128 divisors (see below), whose sum is σ = 19535040. Its totient is φ = 1388544.

The previous prime is 5665903. The next prime is 5665937. The reversal of 5665920 is 295665.

It is an interprime number because it is at equal distance from previous prime (5665903) and next prime (5665937).

It is a tau number, because it is divible by the number of its divisors (128).

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, 24847 + ... + 25073.

Almost surely, 2^5665920 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 5665920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9767520).

5665920 is an abundant number, since it is smaller than the sum of its proper divisors (13869120).

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

5665920 is a wasteful number, since it uses less digits than its factorization.

5665920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 5665920 is about 2380.3193063117. The cubic root of 5665920 is about 178.2748772412.

The spelling of 5665920 in words is "five million, six hundred sixty-five thousand, nine hundred twenty".