6163985 has 4 divisors (see below), whose sum is σ = 7396788. Its totient is φ = 4931184.

The previous prime is 6163957. The next prime is 6163991. The reversal of 6163985 is 5893616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 1481089 = 2164^2 + 1217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6163985 is a prime.

It is a super-2 number, since 2×6163985² = 75989422160450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616394 + ... + 616403.

It is an arithmetic number, because the mean of its divisors is an integer number (1849197).

Almost surely, 2^6163985 is an apocalyptic number.

It is an amenable number.

6163985 is a deficient number, since it is larger than the sum of its proper divisors (1232803).

6163985 is a wasteful number, since it uses less digits than its factorization.

6163985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232802.

The product of its digits is 38880, while the sum is 38.

The square root of 6163985 is about 2482.7374005319. The cubic root of 6163985 is about 183.3526499390.

It can be divided in two parts, 61 and 63985, that added together give a palindrome (64046).

The spelling of 6163985 in words is "six million, one hundred sixty-three thousand, nine hundred eighty-five".