660620352 has 336 divisors, whose sum is σ = 2201582592. Its totient is φ = 173859840.

The previous prime is 660620341. The next prime is 660620371. The reversal of 660620352 is 253026066.

It is a tau number, because it is divible by the number of its divisors (336).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9304477 + ... + 9304547.

Almost surely, 2^660620352 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 660620352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100791296).

660620352 is an abundant number, since it is smaller than the sum of its proper divisors (1540962240).

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

660620352 is a wasteful number, since it uses less digits than its factorization.

660620352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 660620352 is about 25702.5359060152. The cubic root of 660620352 is about 870.9314690033.

The spelling of 660620352 in words is "six hundred sixty million, six hundred twenty thousand, three hundred fifty-two".