660393248 has 24 divisors (see below), whose sum is σ = 1342091520. Its totient is φ = 319544640.

The previous prime is 660393229. The next prime is 660393257. The reversal of 660393248 is 842393066.

It is a super-2 number, since 2×660393248² = 872238484007979008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331868 + ... + 333851.

It is an arithmetic number, because the mean of its divisors is an integer number (55920480).

Almost surely, 2^660393248 is an apocalyptic number.

It is an amenable number.

660393248 is an abundant number, since it is smaller than the sum of its proper divisors (681698272).

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

660393248 is a wasteful number, since it uses less digits than its factorization.

660393248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665760 (or 665752 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 660393248 is about 25698.1175964311. The cubic root of 660393248 is about 870.8316564108.

The spelling of 660393248 in words is "six hundred sixty million, three hundred ninety-three thousand, two hundred forty-eight".