68477863 has 2 divisors, whose sum is σ = 68477864. Its totient is φ = 68477862.

The previous prime is 68477839. The next prime is 68477879. The reversal of 68477863 is 36877486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68477863 - 2¹³ = 68469671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68477363) 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, 34238931 + 34238932.

It is an arithmetic number, because the mean of its divisors is an integer number (34238932).

Almost surely, 2^68477863 is an apocalyptic number.

68477863 is a deficient number, since it is larger than the sum of its proper divisors (1).

68477863 is an equidigital number, since it uses as much as digits as its factorization.

68477863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 49.

The square root of 68477863 is about 8275.1352254812. The cubic root of 68477863 is about 409.1193929333.

The spelling of 68477863 in words is "sixty-eight million, four hundred seventy-seven thousand, eight hundred sixty-three".