260876809 has 8 divisors (see below), whose sum is σ = 271623240. Its totient is φ = 250339200.

The previous prime is 260876797. The next prime is 260876831. The reversal of 260876809 is 908678062.

It can be written as a sum of positive squares in 4 ways, for example, as 3980025 + 256896784 = 1995^2 + 16028^2 .

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 260876809 - 2¹³ = 260868617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260876009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49654 + ... + 54655.

It is an arithmetic number, because the mean of its divisors is an integer number (33952905).

Almost surely, 2^260876809 is an apocalyptic number.

It is an amenable number.

260876809 is a deficient number, since it is larger than the sum of its proper divisors (10746431).

260876809 is a wasteful number, since it uses less digits than its factorization.

260876809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104411.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 260876809 is about 16151.6813056722. The cubic root of 260876809 is about 638.9670911888.

It can be divided in two parts, 26087 and 6809, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 260876809 in words is "two hundred sixty million, eight hundred seventy-six thousand, eight hundred nine".