260820001 has 16 divisors (see below), whose sum is σ = 301190400. Its totient is φ = 223711488.

The previous prime is 260819987. The next prime is 260820029. The reversal of 260820001 is 100028062.

It is a happy number.

260820001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 260820001 - 2¹³ = 260811809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260820041) 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, 9990 + ... + 24928.

It is an arithmetic number, because the mean of its divisors is an integer number (18824400).

Almost surely, 2^260820001 is an apocalyptic number.

It is an amenable number.

260820001 is a deficient number, since it is larger than the sum of its proper divisors (40370399).

260820001 is a wasteful number, since it uses less digits than its factorization.

260820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15048.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 260820001 is about 16149.9226313936. The cubic root of 260820001 is about 638.9207077665.

Adding to 260820001 its reverse (100028062), we get a palindrome (360848063).

The spelling of 260820001 in words is "two hundred sixty million, eight hundred twenty thousand, one".