2661335 has 4 divisors (see below), whose sum is σ = 3193608. Its totient is φ = 2129064.

The previous prime is 2661331. The next prime is 2661341. The reversal of 2661335 is 5331662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2661335 - 2² = 2661331 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661331) 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, 266129 + ... + 266138.

It is an arithmetic number, because the mean of its divisors is an integer number (798402).

2^2661335 is an apocalyptic number.

2661335 is a deficient number, since it is larger than the sum of its proper divisors (532273).

2661335 is an equidigital number, since it uses as much as digits as its factorization.

2661335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532272.

The product of its digits is 3240, while the sum is 26.

The square root of 2661335 is about 1631.3598622009. The cubic root of 2661335 is about 138.5797739282.

Adding to 2661335 its reverse (5331662), we get a palindrome (7992997).

The spelling of 2661335 in words is "two million, six hundred sixty-one thousand, three hundred thirty-five".