660498432 has 192 divisors, whose sum is σ = 1993118400. Its totient is φ = 192675840.

The previous prime is 660498409. The next prime is 660498457. The reversal of 660498432 is 234894066.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1959768 + ... + 1960104.

It is an arithmetic number, because the mean of its divisors is an integer number (10380825).

Almost surely, 2^660498432 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 660498432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996559200).

660498432 is an abundant number, since it is smaller than the sum of its proper divisors (1332619968).

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

660498432 is a wasteful number, since it uses less digits than its factorization.

660498432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 660498432 is about 25700.1640461690. The cubic root of 660498432 is about 870.8778878013.

The spelling of 660498432 in words is "six hundred sixty million, four hundred ninety-eight thousand, four hundred thirty-two".