68115877 has 2 divisors, whose sum is σ = 68115878. Its totient is φ = 68115876.

The previous prime is 68115871. The next prime is 68115881. The reversal of 68115877 is 77851186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48455521 + 19660356 = 6961^2 + 4434^2 .

It is a cyclic number.

It is not a de Polignac number, because 68115877 - 2³ = 68115869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68115871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34057938 + 34057939.

It is an arithmetic number, because the mean of its divisors is an integer number (34057939).

Almost surely, 2^68115877 is an apocalyptic number.

It is an amenable number.

68115877 is a deficient number, since it is larger than the sum of its proper divisors (1).

68115877 is an equidigital number, since it uses as much as digits as its factorization.

68115877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 43.

The square root of 68115877 is about 8253.2343357014. The cubic root of 68115877 is about 408.3972266348.

The spelling of 68115877 in words is "sixty-eight million, one hundred fifteen thousand, eight hundred seventy-seven".