660363053 has 6 divisors (see below), whose sum is σ = 768177486. Its totient is φ = 566025432.

The previous prime is 660362999. The next prime is 660363071. The reversal of 660363053 is 350363066.

It can be written as a sum of positive squares in only one way, i.e., 399120484 + 261242569 = 19978^2 + 16163^2 .

It is a de Polignac number, because none of the positive numbers 2^k-660363053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660333053) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6738350 + ... + 6738447.

It is an arithmetic number, because the mean of its divisors is an integer number (128029581).

Almost surely, 2^660363053 is an apocalyptic number.

It is an amenable number.

660363053 is a deficient number, since it is larger than the sum of its proper divisors (107814433).

660363053 is a wasteful number, since it uses less digits than its factorization.

660363053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13476811 (or 13476804 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 32.

The square root of 660363053 is about 25697.5300953224. The cubic root of 660363053 is about 870.8183839338.

The spelling of 660363053 in words is "six hundred sixty million, three hundred sixty-three thousand, fifty-three".