7998763 has 2 divisors, whose sum is σ = 7998764. Its totient is φ = 7998762.

The previous prime is 7998743. The next prime is 7998769. The reversal of 7998763 is 3678997.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7998763 is a prime.

7998763 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7998769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999381 + 3999382.

It is an arithmetic number, because the mean of its divisors is an integer number (3999382).

Almost surely, 2^7998763 is an apocalyptic number.

7998763 is a deficient number, since it is larger than the sum of its proper divisors (1).

7998763 is an equidigital number, since it uses as much as digits as its factorization.

7998763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 7998763 is about 2828.2084435204. The cubic root of 7998763 is about 199.9896911353.

The spelling of 7998763 in words is "seven million, nine hundred ninety-eight thousand, seven hundred sixty-three".