385217 has 8 divisors (see below), whose sum is σ = 445056. Its totient is φ = 326592.

The previous prime is 385199. The next prime is 385223. The reversal of 385217 is 712583.

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

It is not a de Polignac number, because 385217 - 2⁶ = 385153 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (55632).

2³⁸⁵²¹⁷ is an apocalyptic number.

It is an amenable number.

385217 is a deficient number, since it is larger than the sum of its proper divisors (59839).

385217 is a wasteful number, since it uses less digits than its factorization.

385217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607.

The product of its digits is 1680, while the sum is 26.

The square root of 385217 is about 620.6585212498. The cubic root of 385217 is about 72.7615287012.

The spelling of 385217 in words is "three hundred eighty-five thousand, two hundred seventeen".