2660787 has 12 divisors (see below), whose sum is σ = 3862560. Its totient is φ = 1765008.

The previous prime is 2660783. The next prime is 2660803. The reversal of 2660787 is 7870662.

2660787 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 2660787 - 2² = 2660783 is a prime.

2660787 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2660783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1533 + ... + 2769.

It is an arithmetic number, because the mean of its divisors is an integer number (321880).

2^2660787 is an apocalyptic number.

2660787 is a deficient number, since it is larger than the sum of its proper divisors (1201773).

2660787 is a wasteful number, since it uses less digits than its factorization.

2660787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 2660787 is about 1631.1918955169. The cubic root of 2660787 is about 138.5702615432.

It can be divided in two parts, 266078 and 7, that added together give a triangular number (266085 = T₇₂₉).

The spelling of 2660787 in words is "two million, six hundred sixty thousand, seven hundred eighty-seven".