1063663 has 4 divisors (see below), whose sum is σ = 1089648. Its totient is φ = 1037680.

The previous prime is 1063661. The next prime is 1063693. The reversal of 1063663 is 3663601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3663601 = 23 ⋅159287.

It is a cyclic number.

It is not a de Polignac number, because 1063663 - 2¹ = 1063661 is a prime.

It is a super-2 number, since 2×1063663² = 2262757955138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12931 + ... + 13012.

It is an arithmetic number, because the mean of its divisors is an integer number (272412).

2^1063663 is an apocalyptic number.

1063663 is a deficient number, since it is larger than the sum of its proper divisors (25985).

1063663 is an equidigital number, since it uses as much as digits as its factorization.

1063663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25984.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1063663 is about 1031.3403899780. The cubic root of 1063663 is about 102.0785950691.

The spelling of 1063663 in words is "one million, sixty-three thousand, six hundred sixty-three".