2662399 has 2 divisors, whose sum is σ = 2662400. Its totient is φ = 2662398.

The previous prime is 2662381. The next prime is 2662453. The reversal of 2662399 is 9932662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2662399 - 2⁷ = 2662271 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2662339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331199 + 1331200.

It is an arithmetic number, because the mean of its divisors is an integer number (1331200).

2^2662399 is an apocalyptic number.

2662399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2662399 is an equidigital number, since it uses as much as digits as its factorization.

2662399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The square root of 2662399 is about 1631.6859379182. The cubic root of 2662399 is about 138.5982395020.

The spelling of 2662399 in words is "two million, six hundred sixty-two thousand, three hundred ninety-nine".