68000077 has 2 divisors, whose sum is σ = 68000078. Its totient is φ = 68000076.

The previous prime is 68000047. The next prime is 68000129. The reversal of 68000077 is 77000086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59814756 + 8185321 = 7734^2 + 2861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68000077 is a prime.

68000077 is a modest number, since divided by 77 gives 68 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68000047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34000038 + 34000039.

It is an arithmetic number, because the mean of its divisors is an integer number (34000039).

Almost surely, 2^68000077 is an apocalyptic number.

It is an amenable number.

68000077 is a deficient number, since it is larger than the sum of its proper divisors (1).

68000077 is an equidigital number, since it uses as much as digits as its factorization.

68000077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 68000077 is about 8246.2159200448. The cubic root of 68000077 is about 408.1656642541.

Subtracting 68000077 from its reverse (77000086), we obtain a palindrome (9000009).

The spelling of 68000077 in words is "sixty-eight million, seventy-seven", and thus it is an aban number and an uban number.