7940663 has 2 divisors, whose sum is σ = 7940664. Its totient is φ = 7940662.

The previous prime is 7940641. The next prime is 7940707. The reversal of 7940663 is 3660497.

It is a weak prime.

It is an emirp because it is prime and its reverse (3660497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7940663 - 2¹² = 7936567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7940063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3970331 + 3970332.

It is an arithmetic number, because the mean of its divisors is an integer number (3970332).

Almost surely, 2^7940663 is an apocalyptic number.

7940663 is a deficient number, since it is larger than the sum of its proper divisors (1).

7940663 is an equidigital number, since it uses as much as digits as its factorization.

7940663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 7940663 is about 2817.9182032131. The cubic root of 7940663 is about 199.5042974097.

The spelling of 7940663 in words is "seven million, nine hundred forty thousand, six hundred sixty-three".