10812785 has 4 divisors (see below), whose sum is σ = 12975348. Its totient is φ = 8650224.

The previous prime is 10812779. The next prime is 10812787. The reversal of 10812785 is 58721801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58721801 = 139 ⋅422459.

It can be written as a sum of positive squares in 2 ways, for example, as 6012304 + 4800481 = 2452^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 10812785 - 2¹⁰ = 10811761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10812787) 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, 1081274 + ... + 1081283.

It is an arithmetic number, because the mean of its divisors is an integer number (3243837).

Almost surely, 2^10812785 is an apocalyptic number.

It is an amenable number.

10812785 is a deficient number, since it is larger than the sum of its proper divisors (2162563).

10812785 is an equidigital number, since it uses as much as digits as its factorization.

10812785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162562.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 10812785 is about 3288.2799455034. The cubic root of 10812785 is about 221.1290783799.

The spelling of 10812785 in words is "ten million, eight hundred twelve thousand, seven hundred eighty-five".