2661355 has 8 divisors (see below), whose sum is σ = 3204432. Its totient is φ = 2121888.

The previous prime is 2661341. The next prime is 2661371. The reversal of 2661355 is 5531662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1152 + ... + 2578.

It is an arithmetic number, because the mean of its divisors is an integer number (400554).

2^2661355 is an apocalyptic number.

2661355 is a deficient number, since it is larger than the sum of its proper divisors (543077).

2661355 is a wasteful number, since it uses less digits than its factorization.

2661355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805.

The product of its digits is 5400, while the sum is 28.

The square root of 2661355 is about 1631.3659920447. The cubic root of 2661355 is about 138.5801210708.

The spelling of 2661355 in words is "two million, six hundred sixty-one thousand, three hundred fifty-five".