387320660 has 24 divisors (see below), whose sum is σ = 814635360. Its totient is φ = 154687904.

The previous prime is 387320657. The next prime is 387320669. The reversal of 387320660 is 66023783.

It is a self number, because there is not a number n which added to its sum of digits gives 387320660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387320669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514 + ... + 27873.

It is an arithmetic number, because the mean of its divisors is an integer number (33943140).

Almost surely, 2^387320660 is an apocalyptic number.

It is an amenable number.

387320660 is an abundant number, since it is smaller than the sum of its proper divisors (427314700).

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

387320660 is a wasteful number, since it uses less digits than its factorization.

387320660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30055 (or 30053 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 387320660 is about 19680.4639172963. The cubic root of 387320660 is about 728.9373793292.

The spelling of 387320660 in words is "three hundred eighty-seven million, three hundred twenty thousand, six hundred sixty".