660366486 has 72 divisors (see below), whose sum is σ = 1594976760. Its totient is φ = 202434336.

The previous prime is 660366481. The next prime is 660366529. The reversal of 660366486 is 684663066.

660366486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×660366486⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660366481) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2454760 + ... + 2455028.

It is an arithmetic number, because the mean of its divisors is an integer number (22152455).

Almost surely, 2^660366486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660366486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (797488380).

660366486 is an abundant number, since it is smaller than the sum of its proper divisors (934610274).

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

660366486 is a wasteful number, since it uses less digits than its factorization.

660366486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The square root of 660366486 is about 25697.5968915383. The cubic root of 660366486 is about 870.8198929594.

The spelling of 660366486 in words is "six hundred sixty million, three hundred sixty-six thousand, four hundred eighty-six".