384647685 has 32 divisors (see below), whose sum is σ = 662914560. Its totient is φ = 189822528.

The previous prime is 384647633. The next prime is 384647701. The reversal of 384647685 is 586746483.

It is not a de Polignac number, because 384647685 - 2¹⁴ = 384631301 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 3439 + ... + 27948.

It is an arithmetic number, because the mean of its divisors is an integer number (20716080).

Almost surely, 2^384647685 is an apocalyptic number.

It is an amenable number.

384647685 is a deficient number, since it is larger than the sum of its proper divisors (278266875).

384647685 is a wasteful number, since it uses less digits than its factorization.

384647685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31457.

The product of its digits is 3870720, while the sum is 51.

The square root of 384647685 is about 19612.4369979868. The cubic root of 384647685 is about 727.2566609779.

The spelling of 384647685 in words is "three hundred eighty-four million, six hundred forty-seven thousand, six hundred eighty-five".