68403077 has 2 divisors, whose sum is σ = 68403078. Its totient is φ = 68403076.

The previous prime is 68403037. The next prime is 68403079. The reversal of 68403077 is 77030486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54257956 + 14145121 = 7366^2 + 3761^2 .

It is a cyclic number.

It is not a de Polignac number, because 68403077 - 2⁸ = 68402821 is a prime.

Together with 68403079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68403079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34201538 + 34201539.

It is an arithmetic number, because the mean of its divisors is an integer number (34201539).

Almost surely, 2^68403077 is an apocalyptic number.

It is an amenable number.

68403077 is a deficient number, since it is larger than the sum of its proper divisors (1).

68403077 is an equidigital number, since it uses as much as digits as its factorization.

68403077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 68403077 is about 8270.6152733639. The cubic root of 68403077 is about 408.9704029451.

The spelling of 68403077 in words is "sixty-eight million, four hundred three thousand, seventy-seven".