68986783 has 2 divisors, whose sum is σ = 68986784. Its totient is φ = 68986782.

The previous prime is 68986769. The next prime is 68986787. The reversal of 68986783 is 38768986.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68986783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68986787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34493391 + 34493392.

It is an arithmetic number, because the mean of its divisors is an integer number (34493392).

Almost surely, 2^68986783 is an apocalyptic number.

68986783 is a deficient number, since it is larger than the sum of its proper divisors (1).

68986783 is an equidigital number, since it uses as much as digits as its factorization.

68986783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 55.

The square root of 68986783 is about 8305.8282549063. The cubic root of 68986783 is about 410.1304027004.

The spelling of 68986783 in words is "sixty-eight million, nine hundred eighty-six thousand, seven hundred eighty-three".