260415601 has 4 divisors (see below), whose sum is σ = 263983012. Its totient is φ = 256848192.

The previous prime is 260415599. The next prime is 260415629. The reversal of 260415601 is 106514062.

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 205951201 + 54464400 = 14351^2 + 7380^2 .

It is a cyclic number.

It is not a de Polignac number, because 260415601 - 2¹ = 260415599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260415901) 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 3 ways as a sum of consecutive naturals, for example, 1783596 + ... + 1783741.

It is an arithmetic number, because the mean of its divisors is an integer number (65995753).

Almost surely, 2^260415601 is an apocalyptic number.

It is an amenable number.

260415601 is a deficient number, since it is larger than the sum of its proper divisors (3567411).

260415601 is an equidigital number, since it uses as much as digits as its factorization.

260415601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567410.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 260415601 is about 16137.3975906898. The cubic root of 260415601 is about 638.5903225877.

Adding to 260415601 its reverse (106514062), we get a palindrome (366929663).

The spelling of 260415601 in words is "two hundred sixty million, four hundred fifteen thousand, six hundred one".