660291159 has 16 divisors (see below), whose sum is σ = 986382720. Its totient is φ = 389360160.

The previous prime is 660291157. The next prime is 660291167. The reversal of 660291159 is 951192066.

It is not a de Polignac number, because 660291159 - 2¹ = 660291157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660291157) 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, 269169 + ... + 271610.

It is an arithmetic number, because the mean of its divisors is an integer number (61648920).

Almost surely, 2^660291159 is an apocalyptic number.

660291159 is a deficient number, since it is larger than the sum of its proper divisors (326091561).

660291159 is a wasteful number, since it uses less digits than its factorization.

660291159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540830.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 660291159 is about 25696.1312068568. The cubic root of 660291159 is about 870.7867806671.

The spelling of 660291159 in words is "six hundred sixty million, two hundred ninety-one thousand, one hundred fifty-nine".