378520660 has 144 divisors (see below), whose sum is σ = 1003363200. Its totient is φ = 117165312.

The previous prime is 378520631. The next prime is 378520663. The reversal of 378520660 is 66025873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378520663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1407006 + ... + 1407274.

It is an arithmetic number, because the mean of its divisors is an integer number (6967800).

Almost surely, 2^378520660 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 378520660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501681600).

378520660 is an abundant number, since it is smaller than the sum of its proper divisors (624842540).

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

378520660 is a wasteful number, since it uses less digits than its factorization.

378520660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 378520660 is about 19455.6074179143. The cubic root of 378520660 is about 723.3745017283.

The spelling of 378520660 in words is "three hundred seventy-eight million, five hundred twenty thousand, six hundred sixty".