10867821 has 8 divisors (see below), whose sum is σ = 14728224. Its totient is φ = 7126320.

The previous prime is 10867817. The next prime is 10867847. The reversal of 10867821 is 12876801.

It is a happy number.

10867821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10867821 - 2² = 10867817 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10867321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29511 + ... + 29876.

It is an arithmetic number, because the mean of its divisors is an integer number (1841028).

Almost surely, 2^10867821 is an apocalyptic number.

It is an amenable number.

10867821 is a deficient number, since it is larger than the sum of its proper divisors (3860403).

10867821 is an equidigital number, since it uses as much as digits as its factorization.

10867821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59451.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 10867821 is about 3296.6378327017. The cubic root of 10867821 is about 221.5036186430.

The spelling of 10867821 in words is "ten million, eight hundred sixty-seven thousand, eight hundred twenty-one".