68077693 has 2 divisors, whose sum is σ = 68077694. Its totient is φ = 68077692.

The previous prime is 68077637. The next prime is 68077699. The reversal of 68077693 is 39677086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67207204 + 870489 = 8198^2 + 933^2 .

It is a cyclic number.

It is not a de Polignac number, because 68077693 - 2¹³ = 68069501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68077699) 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, 34038846 + 34038847.

It is an arithmetic number, because the mean of its divisors is an integer number (34038847).

Almost surely, 2^68077693 is an apocalyptic number.

It is an amenable number.

68077693 is a deficient number, since it is larger than the sum of its proper divisors (1).

68077693 is an equidigital number, since it uses as much as digits as its factorization.

68077693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 68077693 is about 8250.9207364997. The cubic root of 68077693 is about 408.3209000611.

The spelling of 68077693 in words is "sixty-eight million, seventy-seven thousand, six hundred ninety-three".