5665578 has 8 divisors (see below), whose sum is σ = 11331168. Its totient is φ = 1888524.

The previous prime is 5665571. The next prime is 5665579. The reversal of 5665578 is 8755665.

It is a sphenic number, since it is the product of 3 distinct primes.

5665578 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (5665571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472126 + ... + 472137.

It is an arithmetic number, because the mean of its divisors is an integer number (1416396).

Almost surely, 2^5665578 is an apocalyptic number.

5665578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

5665578 is a wasteful number, since it uses less digits than its factorization.

5665578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944268.

The product of its digits is 252000, while the sum is 42.

The square root of 5665578 is about 2380.2474661262. The cubic root of 5665578 is about 178.2712902253.

The spelling of 5665578 in words is "five million, six hundred sixty-five thousand, five hundred seventy-eight".