660605272767 has 96 divisors (see below), whose sum is σ = 1058095374336. Its totient is φ = 393845760000.

The previous prime is 660605272759. The next prime is 660605272813. The reversal of 660605272767 is 767272506066.

660605272767 is a `hidden beast` number, since 6 + 6 + 0 + 605 + 2 + 7 + 27 + 6 + 7 = 666.

It is not a de Polignac number, because 660605272767 - 2³ = 660605272759 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660605272667) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1114005223 + ... + 1114005815.

It is an arithmetic number, because the mean of its divisors is an integer number (11021826816).

Almost surely, 2^660605272767 is an apocalyptic number.

660605272767 is a deficient number, since it is larger than the sum of its proper divisors (397490101569).

660605272767 is a wasteful number, since it uses less digits than its factorization.

660605272767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 660605272767 in words is "six hundred sixty billion, six hundred five million, two hundred seventy-two thousand, seven hundred sixty-seven".