10260809 has 16 divisors (see below), whose sum is σ = 12111120. Its totient is φ = 8601600.

The previous prime is 10260799. The next prime is 10260821. The reversal of 10260809 is 90806201.

It can be written as a sum of positive squares in 8 ways, for example, as 1092025 + 9168784 = 1045^2 + 3028^2 .

It is a cyclic number.

It is not a de Polignac number, because 10260809 - 2⁴ = 10260793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10260839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5609 + ... + 7209.

It is an arithmetic number, because the mean of its divisors is an integer number (756945).

Almost surely, 2^10260809 is an apocalyptic number.

It is an amenable number.

10260809 is a deficient number, since it is larger than the sum of its proper divisors (1850311).

10260809 is a wasteful number, since it uses less digits than its factorization.

10260809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 10260809 is about 3203.2497561071. The cubic root of 10260809 is about 217.3004043749.

The spelling of 10260809 in words is "ten million, two hundred sixty thousand, eight hundred nine".