665290045 has 8 divisors (see below), whose sum is σ = 912397824. Its totient is φ = 456198864.

The previous prime is 665290037. The next prime is 665290051. The reversal of 665290045 is 540092566.

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 665290045 - 2³ = 665290037 is a prime.

It is a super-2 number, since 2×665290045² = 885221687952204050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665289986 and 665290013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9504109 + ... + 9504178.

It is an arithmetic number, because the mean of its divisors is an integer number (114049728).

Almost surely, 2^665290045 is an apocalyptic number.

It is an amenable number.

665290045 is a deficient number, since it is larger than the sum of its proper divisors (247107779).

665290045 is a wasteful number, since it uses less digits than its factorization.

665290045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19008299.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 665290045 is about 25793.2170347167. The cubic root of 665290045 is about 872.9787554854.

The spelling of 665290045 in words is "six hundred sixty-five million, two hundred ninety thousand, forty-five".