386682660 has 480 divisors, whose sum is σ = 1552733952. Its totient is φ = 78382080.

The previous prime is 386682649. The next prime is 386682691. The reversal of 386682660 is 66286683.

386682660 is a `hidden beast` number, since 386 + 6 + 8 + 266 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 6339030 + ... + 6339090.

Almost surely, 2^386682660 is an apocalyptic number.

386682660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386682660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776366976).

386682660 is an abundant number, since it is smaller than the sum of its proper divisors (1166051292).

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

386682660 is a wasteful number, since it uses less digits than its factorization.

386682660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 386682660 is about 19664.2482693847. The cubic root of 386682660 is about 728.5369207581.

It can be divided in two parts, 38668 and 2660, that added together give a triangular number (41328 = T₂₈₇).

The spelling of 386682660 in words is "three hundred eighty-six million, six hundred eighty-two thousand, six hundred sixty".