1063691863 has 8 divisors (see below), whose sum is σ = 1145845008. Its totient is φ = 981585984.

The previous prime is 1063691851. The next prime is 1063691891. The reversal of 1063691863 is 3681963601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1063691863 - 2⁹ = 1063691351 is a prime.

It is a super-2 number, since 2×1063691863² = 2262880758824821538, 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 (1063691813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45120 + ... + 64522.

It is an arithmetic number, because the mean of its divisors is an integer number (143230626).

Almost surely, 2^1063691863 is an apocalyptic number.

1063691863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1063691863 is a deficient number, since it is larger than the sum of its proper divisors (82153145).

1063691863 is a wasteful number, since it uses less digits than its factorization.

1063691863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23633.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1063691863 is about 32614.2892456665. The cubic root of 1063691863 is about 1020.7951837775.

The spelling of 1063691863 in words is "one billion, sixty-three million, six hundred ninety-one thousand, eight hundred sixty-three".