6413864 has 8 divisors (see below), whose sum is σ = 12026010. Its totient is φ = 3206928.

The previous prime is 6413863. The next prime is 6413873. The reversal of 6413864 is 4683146.

It can be written as a sum of positive squares in only one way, i.e., 6041764 + 372100 = 2458^2 + 610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6413864² = 82275302820992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6413864.

It is not an unprimeable number, because it can be changed into a prime (6413863) by changing a digit.

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 as a sum of consecutive naturals, namely, 400859 + ... + 400874.

Almost surely, 2^6413864 is an apocalyptic number.

It is an amenable number.

6413864 is a deficient number, since it is larger than the sum of its proper divisors (5612146).

6413864 is a wasteful number, since it uses less digits than its factorization.

6413864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801739 (or 801735 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 6413864 is about 2532.5607593896. The cubic root of 6413864 is about 185.7975212125.

The spelling of 6413864 in words is "six million, four hundred thirteen thousand, eight hundred sixty-four".