1063717021 has 4 divisors (see below), whose sum is σ = 1070086752. Its totient is φ = 1057347292.

The previous prime is 1063716989. The next prime is 1063717037. The reversal of 1063717021 is 1207173601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1207173601 = 199 ⋅6066199.

It is a cyclic number.

It is not a de Polignac number, because 1063717021 - 2⁵ = 1063716989 is a prime.

It is a super-2 number, since 2×1063717021² = 2262987801530228882, 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 (1063717121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3184615 + ... + 3184948.

It is an arithmetic number, because the mean of its divisors is an integer number (267521688).

Almost surely, 2^1063717021 is an apocalyptic number.

It is an amenable number.

1063717021 is a deficient number, since it is larger than the sum of its proper divisors (6369731).

1063717021 is an equidigital number, since it uses as much as digits as its factorization.

1063717021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369730.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1063717021 is about 32614.6749332260. The cubic root of 1063717021 is about 1020.8032315226.

The spelling of 1063717021 in words is "one billion, sixty-three million, seven hundred seventeen thousand, twenty-one".