388324666 has 8 divisors (see below), whose sum is σ = 592359840. Its totient is φ = 190871388.

The previous prime is 388324661. The next prime is 388324667. The reversal of 388324666 is 666423883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (388324661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645326 + ... + 1645561.

It is an arithmetic number, because the mean of its divisors is an integer number (74044980).

Almost surely, 2^388324666 is an apocalyptic number.

388324666 is a deficient number, since it is larger than the sum of its proper divisors (204035174).

388324666 is a wasteful number, since it uses less digits than its factorization.

388324666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290948.

The product of its digits is 995328, while the sum is 46.

The square root of 388324666 is about 19705.9550897692. The cubic root of 388324666 is about 729.5666822278.

The spelling of 388324666 in words is "three hundred eighty-eight million, three hundred twenty-four thousand, six hundred sixty-six".