10899621 has 12 divisors (see below), whose sum is σ = 16287180. Its totient is φ = 7015680.

The previous prime is 10899613. The next prime is 10899649. The reversal of 10899621 is 12699801.

10899621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1718721 + 9180900 = 1311^2 + 3030^2 .

It is not a de Polignac number, because 10899621 - 2³ = 10899613 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10899671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20620 + ... + 21141.

It is an arithmetic number, because the mean of its divisors is an integer number (1357265).

Almost surely, 2^10899621 is an apocalyptic number.

It is an amenable number.

10899621 is a deficient number, since it is larger than the sum of its proper divisors (5387559).

10899621 is a wasteful number, since it uses less digits than its factorization.

10899621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41796 (or 41793 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 10899621 is about 3301.4574054499. The cubic root of 10899621 is about 221.7194532612.

The spelling of 10899621 in words is "ten million, eight hundred ninety-nine thousand, six hundred twenty-one".