396481660 has 48 divisors (see below), whose sum is σ = 854784000. Its totient is φ = 154405440.

The previous prime is 396481651. The next prime is 396481693. The reversal of 396481660 is 66184693.

It is a congruent number.

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, 197341 + ... + 199339.

It is an arithmetic number, because the mean of its divisors is an integer number (17808000).

Almost surely, 2^396481660 is an apocalyptic number.

It is an amenable number.

396481660 is an abundant number, since it is smaller than the sum of its proper divisors (458302340).

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

396481660 is a wasteful number, since it uses less digits than its factorization.

396481660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2264 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 396481660 is about 19911.8472272163. The cubic root of 396481660 is about 734.6396555334.

The spelling of 396481660 in words is "three hundred ninety-six million, four hundred eighty-one thousand, six hundred sixty".