660793104890 has 16 divisors (see below), whose sum is σ = 1194621599880. Its totient is φ = 263163017280.

The previous prime is 660793104871. The next prime is 660793104899. The reversal of 660793104890 is 98401397066.

It can be written as a sum of positive squares in 4 ways, for example, as 643455852649 + 17337252241 = 802157^2 + 131671^2 .

It is not an unprimeable number, because it can be changed into a prime (660793104899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144275681 + ... + 144280260.

Almost surely, 2^660793104890 is an apocalyptic number.

660793104890 is a deficient number, since it is larger than the sum of its proper divisors (533828494990).

660793104890 is a wasteful number, since it uses less digits than its factorization.

660793104890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288556177.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 660793104890 in words is "six hundred sixty billion, seven hundred ninety-three million, one hundred four thousand, eight hundred ninety".