10564621 has 4 divisors (see below), whose sum is σ = 10574172. Its totient is φ = 10555072.

The previous prime is 10564601. The next prime is 10564637. The reversal of 10564621 is 12646501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12646501 = 7 ⋅1806643.

It can be written as a sum of positive squares in 2 ways, for example, as 7502121 + 3062500 = 2739^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 10564621 - 2¹⁹ = 10040333 is a prime.

It is a super-2 number, since 2×10564621² = 223222433747282, 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 (10564601) 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, 2860 + ... + 5413.

It is an arithmetic number, because the mean of its divisors is an integer number (2643543).

Almost surely, 2^10564621 is an apocalyptic number.

It is an amenable number.

10564621 is a deficient number, since it is larger than the sum of its proper divisors (9551).

10564621 is an equidigital number, since it uses as much as digits as its factorization.

10564621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9550.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 10564621 is about 3250.3262913129. The cubic root of 10564621 is about 219.4242590607.

The spelling of 10564621 in words is "ten million, five hundred sixty-four thousand, six hundred twenty-one".