10643886 has 72 divisors (see below), whose sum is σ = 26432952. Its totient is φ = 3207600.

The previous prime is 10643863. The next prime is 10643903. The reversal of 10643886 is 68834601.

It is a happy number.

10643886 is a `hidden beast` number, since 1 + 0 + 643 + 8 + 8 + 6 = 666.

10643886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10643886² = 226584618361992, 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 10643886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 58716 + ... + 58896.

Almost surely, 2^10643886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10643886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13216476).

10643886 is an abundant number, since it is smaller than the sum of its proper divisors (15789066).

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

10643886 is a wasteful number, since it uses less digits than its factorization.

10643886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 10643886 is about 3262.4968965502. The cubic root of 10643886 is about 219.9716630169.

It can be divided in two parts, 1064 and 3886, that added together give a triangular number (4950 = T₉₉).

The spelling of 10643886 in words is "ten million, six hundred forty-three thousand, eight hundred eighty-six".