665562 has 8 divisors (see below), whose sum is σ = 1331136. Its totient is φ = 221852.

The previous prime is 665557. The next prime is 665563. The reversal of 665562 is 265566.

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

665562 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 665562.

It is not an unprimeable number, because it can be changed into a prime (665563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55458 + ... + 55469.

It is an arithmetic number, because the mean of its divisors is an integer number (166392).

2⁶⁶⁵⁵⁶² is an apocalyptic number.

665562 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.

665562 is a wasteful number, since it uses less digits than its factorization.

665562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110932.

The product of its digits is 10800, while the sum is 30.

The square root of 665562 is about 815.8198330514. The cubic root of 665562 is about 87.3097690376.

The spelling of 665562 in words is "six hundred sixty-five thousand, five hundred sixty-two".