660195360 has 360 divisors, whose sum is σ = 2567090988. Its totient is φ = 159667200.

The previous prime is 660195343. The next prime is 660195379. The reversal of 660195360 is 63591066.

It can be written as a sum of positive squares in 2 ways, for example, as 545876496 + 114318864 = 23364^2 + 10692^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1567950 + ... + 1568370.

Almost surely, 2^660195360 is an apocalyptic number.

660195360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660195360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283545494).

660195360 is an abundant number, since it is smaller than the sum of its proper divisors (1906895628).

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

660195360 is a wasteful number, since it uses less digits than its factorization.

660195360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 660195360 is about 25694.2670648532. The cubic root of 660195360 is about 870.7446656413.

The spelling of 660195360 in words is "six hundred sixty million, one hundred ninety-five thousand, three hundred sixty".