6363864 has 72 divisors (see below), whose sum is σ = 18698940. Its totient is φ = 1954368.

The previous prime is 6363839. The next prime is 6363881. The reversal of 6363864 is 4683636.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11907 + ... + 12429.

Almost surely, 2^6363864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6363864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9349470).

6363864 is an abundant number, since it is smaller than the sum of its proper divisors (12335076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6363864 is a wasteful number, since it uses less digits than its factorization.

6363864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 541 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6363864 is about 2522.6700140922. The cubic root of 6363864 is about 185.3134593300.

It can be divided in two parts, 6363 and 864, that added together give a palindrome (7227).

The spelling of 6363864 in words is "six million, three hundred sixty-three thousand, eight hundred sixty-four".