2666247 has 8 divisors (see below), whose sum is σ = 3571440. Its totient is φ = 1769280.

The previous prime is 2666227. The next prime is 2666267. The reversal of 2666247 is 7426662.

2666247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2666227) and next prime (2666267).

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

It is not a de Polignac number, because 2666247 - 2¹⁴ = 2649863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666227) 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 7 ways as a sum of consecutive naturals, for example, 1254 + ... + 2627.

It is an arithmetic number, because the mean of its divisors is an integer number (446430).

2^2666247 is an apocalyptic number.

2666247 is a deficient number, since it is larger than the sum of its proper divisors (905193).

2666247 is a wasteful number, since it uses less digits than its factorization.

2666247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113.

The product of its digits is 24192, while the sum is 33.

The square root of 2666247 is about 1632.8646606501. The cubic root of 2666247 is about 138.6649799731.

The spelling of 2666247 in words is "two million, six hundred sixty-six thousand, two hundred forty-seven".