660741489 has 8 divisors (see below), whose sum is σ = 978876320. Its totient is φ = 440494308.

The previous prime is 660741467. The next prime is 660741563. The reversal of 660741489 is 984147066.

660741489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660741489 - 2⁵ = 660741457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660741589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12235927 + ... + 12235980.

It is an arithmetic number, because the mean of its divisors is an integer number (122359540).

Almost surely, 2^660741489 is an apocalyptic number.

It is an amenable number.

660741489 is a deficient number, since it is larger than the sum of its proper divisors (318134831).

660741489 is a wasteful number, since it uses less digits than its factorization.

660741489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24471916 (or 24471910 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 660741489 is about 25704.8923164444. The cubic root of 660741489 is about 870.9846995651.

The spelling of 660741489 in words is "six hundred sixty million, seven hundred forty-one thousand, four hundred eighty-nine".