660364541620 has 72 divisors (see below), whose sum is σ = 1613709560736. Its totient is φ = 226335848256.

The previous prime is 660364541609. The next prime is 660364541687. The reversal of 660364541620 is 26145463066.

660364541620 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 23 ways as a sum of consecutive naturals, for example, 2895807 + ... + 3115513.

It is an arithmetic number, because the mean of its divisors is an integer number (22412632788).

Almost surely, 2^660364541620 is an apocalyptic number.

It is an amenable number.

660364541620 is an abundant number, since it is smaller than the sum of its proper divisors (953345019116).

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

660364541620 is a wasteful number, since it uses less digits than its factorization.

660364541620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222797 (or 222788 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 660364541620 in words is "six hundred sixty billion, three hundred sixty-four million, five hundred forty-one thousand, six hundred twenty".