385055665 has 8 divisors (see below), whose sum is σ = 463098600. Its totient is φ = 307356672.

The previous prime is 385055659. The next prime is 385055701. The reversal of 385055665 is 566550583.

It can be written as a sum of positive squares in 4 ways, for example, as 176570944 + 208484721 = 13288^2 + 14439^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 385055665 - 2²⁵ = 351501233 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83514 + ... + 88003.

It is an arithmetic number, because the mean of its divisors is an integer number (57887325).

Almost surely, 2^385055665 is an apocalyptic number.

It is an amenable number.

385055665 is a deficient number, since it is larger than the sum of its proper divisors (78042935).

385055665 is a wasteful number, since it uses less digits than its factorization.

385055665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171971.

The product of its (nonzero) digits is 540000, while the sum is 43.

The square root of 385055665 is about 19622.8352946255. The cubic root of 385055665 is about 727.5136938806.

The spelling of 385055665 in words is "three hundred eighty-five million, fifty-five thousand, six hundred sixty-five".