6463985 has 16 divisors (see below), whose sum is σ = 8517312. Its totient is φ = 4670400.

The previous prime is 6463979. The next prime is 6463991. The reversal of 6463985 is 5893646.

It is an interprime number because it is at equal distance from previous prime (6463979) and next prime (6463991).

It is not a de Polignac number, because 6463985 - 2⁴ = 6463969 is a prime.

It is a d-powerful number, because it can be written as 6³ + 4⁵ + 6⁸ + 3³ + 9⁷ + 8 + 5³ .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11327 + ... + 11883.

It is an arithmetic number, because the mean of its divisors is an integer number (532332).

Almost surely, 2^6463985 is an apocalyptic number.

It is an amenable number.

6463985 is a deficient number, since it is larger than the sum of its proper divisors (2053327).

6463985 is a wasteful number, since it uses less digits than its factorization.

6463985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784.

The product of its digits is 155520, while the sum is 41.

The square root of 6463985 is about 2542.4368232072. The cubic root of 6463985 is about 186.2802362214.

The spelling of 6463985 in words is "six million, four hundred sixty-three thousand, nine hundred eighty-five".