10857621 has 4 divisors (see below), whose sum is σ = 14476832. Its totient is φ = 7238412.

The previous prime is 10857521. The next prime is 10857631. The reversal of 10857621 is 12675801.

10857621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 10857621 - 2¹¹ = 10855573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10857631) 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, 1809601 + ... + 1809606.

It is an arithmetic number, because the mean of its divisors is an integer number (3619208).

Almost surely, 2^10857621 is an apocalyptic number.

It is an amenable number.

10857621 is a deficient number, since it is larger than the sum of its proper divisors (3619211).

10857621 is an equidigital number, since it uses as much as digits as its factorization.

10857621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619210.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 10857621 is about 3295.0904388195. The cubic root of 10857621 is about 221.4342995000.

The spelling of 10857621 in words is "ten million, eight hundred fifty-seven thousand, six hundred twenty-one".