10898821 has 2 divisors, whose sum is σ = 10898822. Its totient is φ = 10898820.

The previous prime is 10898791. The next prime is 10898857. The reversal of 10898821 is 12889801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10150596 + 748225 = 3186^2 + 865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10898821 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10898861) 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 as a sum of consecutive naturals, namely, 5449410 + 5449411.

It is an arithmetic number, because the mean of its divisors is an integer number (5449411).

Almost surely, 2^10898821 is an apocalyptic number.

It is an amenable number.

10898821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10898821 is an equidigital number, since it uses as much as digits as its factorization.

10898821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 10898821 is about 3301.3362446137. The cubic root of 10898821 is about 221.7140286107.

It can be divided in two parts, 1089 and 8821, that multiplied together give a palindrome (9606069).

The spelling of 10898821 in words is "ten million, eight hundred ninety-eight thousand, eight hundred twenty-one".