10505785 has 4 divisors (see below), whose sum is σ = 12606948. Its totient is φ = 8404624.

The previous prime is 10505777. The next prime is 10505791. The reversal of 10505785 is 58750501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6295081 + 4210704 = 2509^2 + 2052^2 .

It is a cyclic number.

It is not a de Polignac number, because 10505785 - 2³ = 10505777 is a prime.

It is a super-2 number, since 2×10505785² = 220743036932450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050574 + ... + 1050583.

It is an arithmetic number, because the mean of its divisors is an integer number (3151737).

Almost surely, 2^10505785 is an apocalyptic number.

It is an amenable number.

10505785 is a deficient number, since it is larger than the sum of its proper divisors (2101163).

10505785 is an equidigital number, since it uses as much as digits as its factorization.

10505785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101162.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 10505785 is about 3241.2628711661. The cubic root of 10505785 is about 219.0161647194.

The spelling of 10505785 in words is "ten million, five hundred five thousand, seven hundred eighty-five".