678763 has 2 divisors, whose sum is σ = 678764. Its totient is φ = 678762.

The previous prime is 678761. The next prime is 678767. The reversal of 678763 is 367876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678763 - 2¹ = 678761 is a prime.

Together with 678761, it forms a pair of twin primes.

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

678763 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (678761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339381 + 339382.

It is an arithmetic number, because the mean of its divisors is an integer number (339382).

2⁶⁷⁸⁷⁶³ is an apocalyptic number.

678763 is a deficient number, since it is larger than the sum of its proper divisors (1).

678763 is an equidigital number, since it uses as much as digits as its factorization.

678763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 678763 is about 823.8707422891. The cubic root of 678763 is about 87.8832387409.

It can be divided in two parts, 678 and 763, that added together give a palindrome (1441).

The spelling of 678763 in words is "six hundred seventy-eight thousand, seven hundred sixty-three".