387006660 has 72 divisors (see below), whose sum is σ = 1217414016. Its totient is φ = 103200480.

The previous prime is 387006647. The next prime is 387006661. The reversal of 387006660 is 66600783.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387006661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34956 + ... + 44675.

It is an arithmetic number, because the mean of its divisors is an integer number (16908528).

Almost surely, 2^387006660 is an apocalyptic number.

387006660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

387006660 is an abundant number, since it is smaller than the sum of its proper divisors (830407356).

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

387006660 is a wasteful number, since it uses less digits than its factorization.

387006660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79655 (or 79641 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 387006660 is about 19672.4848455908. The cubic root of 387006660 is about 728.7403434352.

The spelling of 387006660 in words is "three hundred eighty-seven million, six thousand, six hundred sixty".