1063323621 has 12 divisors (see below), whose sum is σ = 1556952748. Its totient is φ = 699171264.

The previous prime is 1063323601. The next prime is 1063323637. The reversal of 1063323621 is 1263233601.

It is a happy number.

1063323621 is a `hidden beast` number, since 1 + 0 + 6 + 3 + 32 + 3 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 642622500 + 420701121 = 25350^2 + 20511^2 .

It is not a de Polignac number, because 1063323621 - 2⁵ = 1063323589 is a prime.

It is a super-2 number, since 2×1063323621² = 2261314245953103282, 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 (1063323601) 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 11 ways as a sum of consecutive naturals, for example, 808570 + ... + 809883.

Almost surely, 2^1063323621 is an apocalyptic number.

It is an amenable number.

1063323621 is a deficient number, since it is larger than the sum of its proper divisors (493629127).

1063323621 is a wasteful number, since it uses less digits than its factorization.

1063323621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618532 (or 1618529 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 1063323621 is about 32608.6433480450. The cubic root of 1063323621 is about 1020.6773730157.

The spelling of 1063323621 in words is "one billion, sixty-three million, three hundred twenty-three thousand, six hundred twenty-one".