2664247 has 2 divisors, whose sum is σ = 2664248. Its totient is φ = 2664246.

The previous prime is 2664241. The next prime is 2664253. The reversal of 2664247 is 7424662.

It is a balanced prime because it is at equal distance from previous prime (2664241) and next prime (2664253).

It is a cyclic number.

It is not a de Polignac number, because 2664247 - 2¹⁹ = 2139959 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 6⁵ + 6⁷ + 4⁷ + 2²¹ + 4⁹ + 7³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2664241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332123 + 1332124.

It is an arithmetic number, because the mean of its divisors is an integer number (1332124).

2^2664247 is an apocalyptic number.

2664247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664247 is an equidigital number, since it uses as much as digits as its factorization.

2664247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 2664247 is about 1632.2521251326. The cubic root of 2664247 is about 138.6302995988.

The spelling of 2664247 in words is "two million, six hundred sixty-four thousand, two hundred forty-seven".