660352896 has 192 divisors, whose sum is σ = 2299920480. Its totient is φ = 177537024.

The previous prime is 660352853. The next prime is 660352909. The reversal of 660352896 is 698253066.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-3 number, since 3×660352896³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134680 + ... + 139496.

Almost surely, 2^660352896 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 660352896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149960240).

660352896 is an abundant number, since it is smaller than the sum of its proper divisors (1639567584).

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

660352896 is a wasteful number, since it uses less digits than its factorization.

660352896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861 (or 4846 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 660352896 is about 25697.3324685657. The cubic root of 660352896 is about 870.8139192444.

The spelling of 660352896 in words is "six hundred sixty million, three hundred fifty-two thousand, eight hundred ninety-six".