7878763 has 2 divisors, whose sum is σ = 7878764. Its totient is φ = 7878762.

The previous prime is 7878721. The next prime is 7878791. The reversal of 7878763 is 3678787.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7878763 - 2⁹ = 7878251 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (7878713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3939381 + 3939382.

It is an arithmetic number, because the mean of its divisors is an integer number (3939382).

Almost surely, 2^7878763 is an apocalyptic number.

7878763 is a deficient number, since it is larger than the sum of its proper divisors (1).

7878763 is an equidigital number, since it uses as much as digits as its factorization.

7878763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 46.

The square root of 7878763 is about 2806.9134293740. The cubic root of 7878763 is about 198.9845446445.

The spelling of 7878763 in words is "seven million, eight hundred seventy-eight thousand, seven hundred sixty-three".