660748600 has 72 divisors (see below), whose sum is σ = 1607274360. Its totient is φ = 252141120.

The previous prime is 660748597. The next prime is 660748603. The reversal of 660748600 is 6847066.

It is an interprime number because it is at equal distance from previous prime (660748597) and next prime (660748603).

It is a self number, because there is not a number n which added to its sum of digits gives 660748600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660748603) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1743211 + ... + 1743589.

It is an arithmetic number, because the mean of its divisors is an integer number (22323255).

Almost surely, 2^660748600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660748600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803637180).

660748600 is an abundant number, since it is smaller than the sum of its proper divisors (946525760).

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

660748600 is a wasteful number, since it uses less digits than its factorization.

660748600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 660748600 is about 25705.0306360448. The cubic root of 660748600 is about 870.9878241103.

The spelling of 660748600 in words is "six hundred sixty million, seven hundred forty-eight thousand, six hundred".