260916685 has 4 divisors (see below), whose sum is σ = 313100028. Its totient is φ = 208733344.

The previous prime is 260916659. The next prime is 260916701. The reversal of 260916685 is 586619062.

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 28323684 + 232593001 = 5322^2 + 15251^2 .

It is a cyclic number.

It is not a de Polignac number, because 260916685 - 2⁵ = 260916653 is a prime.

It is a super-2 number, since 2×260916685² = 136155033022778450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 26091664 + ... + 26091673.

It is an arithmetic number, because the mean of its divisors is an integer number (78275007).

Almost surely, 2^260916685 is an apocalyptic number.

It is an amenable number.

260916685 is a deficient number, since it is larger than the sum of its proper divisors (52183343).

260916685 is an equidigital number, since it uses as much as digits as its factorization.

260916685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52183342.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 260916685 is about 16152.9156810775. The cubic root of 260916685 is about 638.9996457034. Note that the first 3 decimals are identical.

The spelling of 260916685 in words is "two hundred sixty million, nine hundred sixteen thousand, six hundred eighty-five".