386646685 has 16 divisors (see below), whose sum is σ = 469710000. Its totient is φ = 305510400.

The previous prime is 386646679. The next prime is 386646703. The reversal of 386646685 is 586646683.

It can be written as a sum of positive squares in 8 ways, for example, as 13461561 + 373185124 = 3669^2 + 19318^2 .

It is not a de Polignac number, because 386646685 - 2¹⁹ = 386122397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308941 + ... + 310189.

It is an arithmetic number, because the mean of its divisors is an integer number (29356875).

Almost surely, 2^386646685 is an apocalyptic number.

It is an amenable number.

386646685 is a deficient number, since it is larger than the sum of its proper divisors (83063315).

386646685 is a wasteful number, since it uses less digits than its factorization.

386646685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its digits is 4976640, while the sum is 52.

The square root of 386646685 is about 19663.3335169803. Note that the first 3 decimals coincide. The cubic root of 386646685 is about 728.5143269266.

The spelling of 386646685 in words is "three hundred eighty-six million, six hundred forty-six thousand, six hundred eighty-five".