10810861 has 8 divisors (see below), whose sum is σ = 11500920. Its totient is φ = 10126848.

The previous prime is 10810853. The next prime is 10810873. The reversal of 10810861 is 16801801.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3553225 + 7257636 = 1885^2 + 2694^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10810861 - 2³ = 10810853 is a prime.

It is a super-2 number, since 2×10810861² = 233749431122642, 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 (10810061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2505 + ... + 5281.

It is an arithmetic number, because the mean of its divisors is an integer number (1437615).

Almost surely, 2^10810861 is an apocalyptic number.

It is an amenable number.

10810861 is a deficient number, since it is larger than the sum of its proper divisors (690059).

10810861 is a wasteful number, since it uses less digits than its factorization.

10810861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 10810861 is about 3287.9873783213. The cubic root of 10810861 is about 221.1159618829.

The spelling of 10810861 in words is "ten million, eight hundred ten thousand, eight hundred sixty-one".