1063986 has 64 divisors (see below), whose sum is σ = 2764800. Its totient is φ = 270480.

The previous prime is 1063973. The next prime is 1063987. The reversal of 1063986 is 6893601.

It is a super-2 number, since 2×1063986² = 2264132416392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22615 + ... + 22661.

It is an arithmetic number, because the mean of its divisors is an integer number (43200).

2^1063986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1063986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382400).

1063986 is an abundant number, since it is smaller than the sum of its proper divisors (1700814).

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

1063986 is a wasteful number, since it uses less digits than its factorization.

1063986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1063986 is about 1031.4969704270. The cubic root of 1063986 is about 102.0889266777.

The spelling of 1063986 in words is "one million, sixty-three thousand, nine hundred eighty-six".