660422016 has 96 divisors (see below), whose sum is σ = 1961843520. Its totient is φ = 213027840.

The previous prime is 660422011. The next prime is 660422039. The reversal of 660422016 is 610224066.

It is a happy number.

660422016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660422011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26466 + ... + 44958.

It is an arithmetic number, because the mean of its divisors is an integer number (20435870).

Almost surely, 2^660422016 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 660422016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980921760).

660422016 is an abundant number, since it is smaller than the sum of its proper divisors (1301421504).

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

660422016 is a wasteful number, since it uses less digits than its factorization.

660422016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18544 (or 18529 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 660422016 is about 25698.6773200490. The cubic root of 660422016 is about 870.8443012611.

The spelling of 660422016 in words is "six hundred sixty million, four hundred twenty-two thousand, sixteen".