1063664 has 20 divisors (see below), whose sum is σ = 2355504. Its totient is φ = 455808.

The previous prime is 1063661. The next prime is 1063693. The reversal of 1063664 is 4663601.

It is a super-2 number, since 2×1063664² = 2262762209792, which contains 22 as substring.

It is an Ulam 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, 4637 + ... + 4860.

2^1063664 is an apocalyptic number.

1063664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1063664 is an abundant number, since it is smaller than the sum of its proper divisors (1291840).

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

1063664 is an equidigital number, since it uses as much as digits as its factorization.

1063664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512 (or 9506 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1063664 is about 1031.3408747839. The cubic root of 1063664 is about 102.0786270587.

The spelling of 1063664 in words is "one million, sixty-three thousand, six hundred sixty-four".