10636621 has 4 divisors (see below), whose sum is σ = 10690812. Its totient is φ = 10582432.

The previous prime is 10636583. The next prime is 10636643. The reversal of 10636621 is 12663601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10465225 + 171396 = 3235^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 10636621 - 2²³ = 2248013 is a prime.

It is a super-2 number, since 2×10636621² = 226275412595282, 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 (10636651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26800 + ... + 27193.

It is an arithmetic number, because the mean of its divisors is an integer number (2672703).

Almost surely, 2^10636621 is an apocalyptic number.

It is an amenable number.

10636621 is a deficient number, since it is larger than the sum of its proper divisors (54191).

10636621 is an equidigital number, since it uses as much as digits as its factorization.

10636621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54190.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 10636621 is about 3261.3832954745. The cubic root of 10636621 is about 219.9216042989.

The spelling of 10636621 in words is "ten million, six hundred thirty-six thousand, six hundred twenty-one".