2660505 has 16 divisors (see below), whose sum is σ = 4283520. Its totient is φ = 1410048.

The previous prime is 2660473. The next prime is 2660509. The reversal of 2660505 is 5050662.

It is not a de Polignac number, because 2660505 - 2⁵ = 2660473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660509) 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, 2436 + ... + 3354.

It is an arithmetic number, because the mean of its divisors is an integer number (267720).

2^2660505 is an apocalyptic number.

It is an amenable number.

2660505 is a deficient number, since it is larger than the sum of its proper divisors (1623015).

2660505 is a wasteful number, since it uses less digits than its factorization.

2660505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2660505 is about 1631.1054533659. The cubic root of 2660505 is about 138.5653659748.

The spelling of 2660505 in words is "two million, six hundred sixty thousand, five hundred five".