6217985 has 12 divisors (see below), whose sum is σ = 7594428. Its totient is φ = 4887168.

The previous prime is 6217963. The next prime is 6217993. The reversal of 6217985 is 5897126.

It can be written as a sum of positive squares in 6 ways, for example, as 1478656 + 4739329 = 1216^2 + 2177^2 .

It is not a de Polignac number, because 6217985 - 2¹⁰ = 6216961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39527 + ... + 39683.

It is an arithmetic number, because the mean of its divisors is an integer number (632869).

Almost surely, 2^6217985 is an apocalyptic number.

It is an amenable number.

6217985 is a deficient number, since it is larger than the sum of its proper divisors (1376443).

6217985 is an equidigital number, since it uses as much as digits as its factorization.

6217985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 251 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 6217985 is about 2493.5887792497. The cubic root of 6217985 is about 183.8865183203.

The spelling of 6217985 in words is "six million, two hundred seventeen thousand, nine hundred eighty-five".