386370666 has 48 divisors (see below), whose sum is σ = 920844288. Its totient is φ = 117074760.

The previous prime is 386370661. The next prime is 386370667. The reversal of 386370666 is 666073683.

It is not an unprimeable number, because it can be changed into a prime (386370661) 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, 15895 + ... + 32021.

It is an arithmetic number, because the mean of its divisors is an integer number (19184256).

Almost surely, 2^386370666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386370666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460422144).

386370666 is an abundant number, since it is smaller than the sum of its proper divisors (534473622).

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

386370666 is a wasteful number, since it uses less digits than its factorization.

386370666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16168 (or 16143 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 386370666 is about 19656.3136421863. The cubic root of 386370666 is about 728.3409285997.

It can be divided in two parts, 3863 and 70666, that added together give a square (74529 = 273²).

The spelling of 386370666 in words is "three hundred eighty-six million, three hundred seventy thousand, six hundred sixty-six".