660506333545 has 8 divisors (see below), whose sum is σ = 792682941960. Its totient is φ = 528354839040.

The previous prime is 660506333533. The next prime is 660506333549. The reversal of 660506333545 is 545333605066.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 260491827456 + 400014506089 = 510384^2 + 632467^2 .

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

It is not a de Polignac number, because 660506333545 - 2⁹ = 660506333033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660506333495 and 660506333504.

It is not an unprimeable number, because it can be changed into a prime (660506333549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6220566 + ... + 6325855.

It is an arithmetic number, because the mean of its divisors is an integer number (99085367745).

Almost surely, 2^660506333545 is an apocalyptic number.

It is an amenable number.

660506333545 is a deficient number, since it is larger than the sum of its proper divisors (132176608415).

660506333545 is a wasteful number, since it uses less digits than its factorization.

660506333545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12556955.

The product of its (nonzero) digits is 2916000, while the sum is 46.

The spelling of 660506333545 in words is "six hundred sixty billion, five hundred six million, three hundred thirty-three thousand, five hundred forty-five".