660427880766 has 32 divisors (see below), whose sum is σ = 1363551307776. Its totient is φ = 213027612000.

The previous prime is 660427880759. The next prime is 660427880779. The reversal of 660427880766 is 667088724066.

660427880766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032776 + ... + 3243236.

It is an arithmetic number, because the mean of its divisors is an integer number (42610978368).

Almost surely, 2^660427880766 is an apocalyptic number.

660427880766 is an abundant number, since it is smaller than the sum of its proper divisors (703123427010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660427880766 is a wasteful number, since it uses less digits than its factorization.

660427880766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227368.

The product of its (nonzero) digits is 32514048, while the sum is 60.

The spelling of 660427880766 in words is "six hundred sixty billion, four hundred twenty-seven million, eight hundred eighty thousand, seven hundred sixty-six".