660159742 has 32 divisors (see below), whose sum is σ = 1146221280. Its totient is φ = 281825280.

The previous prime is 660159727. The next prime is 660159743. The reversal of 660159742 is 247951066.

It is a junction number, because it is equal to n+sod(n) for n = 660159695 and 660159704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660159743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206734 + ... + 209902.

It is an arithmetic number, because the mean of its divisors is an integer number (35819415).

Almost surely, 2^660159742 is an apocalyptic number.

660159742 is a deficient number, since it is larger than the sum of its proper divisors (486061538).

660159742 is a wasteful number, since it uses less digits than its factorization.

660159742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 660159742 is about 25693.5739436926. The cubic root of 660159742 is about 870.7290062658.

It can be divided in two parts, 66015 and 9742, that added together give a palindrome (75757).

The spelling of 660159742 in words is "six hundred sixty million, one hundred fifty-nine thousand, seven hundred forty-two".