10256609 has 4 divisors (see below), whose sum is σ = 11189040. Its totient is φ = 9324180.

The previous prime is 10256579. The next prime is 10256621. The reversal of 10256609 is 90665201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10256609 - 2⁸ = 10256353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10256209) 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, 466199 + ... + 466220.

It is an arithmetic number, because the mean of its divisors is an integer number (2797260).

Almost surely, 2^10256609 is an apocalyptic number.

It is an amenable number.

10256609 is a deficient number, since it is larger than the sum of its proper divisors (932431).

10256609 is an equidigital number, since it uses as much as digits as its factorization.

10256609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932430.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 10256609 is about 3202.5941047844. The cubic root of 10256609 is about 217.2707515392.

The spelling of 10256609 in words is "ten million, two hundred fifty-six thousand, six hundred nine".