665534005 has 8 divisors (see below), whose sum is σ = 817214112. Its totient is φ = 520045008.

The previous prime is 665533949. The next prime is 665534011. The reversal of 665534005 is 500435566.

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

It is a cyclic number.

It is not a de Polignac number, because 665534005 - 2¹¹ = 665531957 is a prime.

It is a super-2 number, since 2×665534005² = 885871023622680050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547539 + ... + 1547968.

It is an arithmetic number, because the mean of its divisors is an integer number (102151764).

Almost surely, 2^665534005 is an apocalyptic number.

It is an amenable number.

665534005 is a deficient number, since it is larger than the sum of its proper divisors (151680107).

665534005 is a wasteful number, since it uses less digits than its factorization.

665534005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095555.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 665534005 is about 25797.9457515516. The cubic root of 665534005 is about 873.0854487350.

The spelling of 665534005 in words is "six hundred sixty-five million, five hundred thirty-four thousand, five".