2600001 has 12 divisors (see below), whose sum is σ = 3877120. Its totient is φ = 1677240.

The previous prime is 2599999. The next prime is 2600011. The reversal of 2600001 is 1000062.

It is not a de Polignac number, because 2600001 - 2¹ = 2599999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2600011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4381 + ... + 4938.

2^2600001 is an apocalyptic number.

It is an amenable number.

2600001 is a deficient number, since it is larger than the sum of its proper divisors (1277119).

2600001 is a wasteful number, since it uses less digits than its factorization.

2600001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9356 (or 9353 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2600001 is about 1612.4518597465. The cubic root of 2600001 is about 137.5069043365.

Adding to 2600001 its reverse (1000062), we get a palindrome (3600063).

The spelling of 2600001 in words is "two million, six hundred thousand, one".