2668787 has 4 divisors (see below), whose sum is σ = 2911416. Its totient is φ = 2426160.

The previous prime is 2668781. The next prime is 2668793. The reversal of 2668787 is 7878662.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2668781) and next prime (2668793).

It is not a de Polignac number, because 2668787 - 2¹² = 2664691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2668781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121298 + ... + 121319.

It is an arithmetic number, because the mean of its divisors is an integer number (727854).

2^2668787 is an apocalyptic number.

2668787 is a deficient number, since it is larger than the sum of its proper divisors (242629).

2668787 is a wasteful number, since it uses less digits than its factorization.

2668787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242628.

The product of its digits is 225792, while the sum is 44.

The square root of 2668787 is about 1633.6422496985. The cubic root of 2668787 is about 138.7089990587.

The spelling of 2668787 in words is "two million, six hundred sixty-eight thousand, seven hundred eighty-seven".