660692160 has 224 divisors, whose sum is σ = 2381829120. Its totient is φ = 172329984.

The previous prime is 660692147. The next prime is 660692171. The reversal of 660692160 is 61296066.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 405267 + ... + 406893.

Almost surely, 2^660692160 is an apocalyptic number.

660692160 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 660692160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190914560).

660692160 is an abundant number, since it is smaller than the sum of its proper divisors (1721136960).

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

660692160 is a wasteful number, since it uses less digits than its factorization.

660692160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 660692160 is about 25703.9327730213. The cubic root of 660692160 is about 870.9630239808.

The spelling of 660692160 in words is "six hundred sixty million, six hundred ninety-two thousand, one hundred sixty".