68145377 has 2 divisors, whose sum is σ = 68145378. Its totient is φ = 68145376.

The previous prime is 68145373. The next prime is 68145433. The reversal of 68145377 is 77354186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52432081 + 15713296 = 7241^2 + 3964^2 .

It is a cyclic number.

It is not a de Polignac number, because 68145377 - 2² = 68145373 is a prime.

It is not a weakly prime, because it can be changed into another prime (68145373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34072688 + 34072689.

It is an arithmetic number, because the mean of its divisors is an integer number (34072689).

Almost surely, 2^68145377 is an apocalyptic number.

It is an amenable number.

68145377 is a deficient number, since it is larger than the sum of its proper divisors (1).

68145377 is an equidigital number, since it uses as much as digits as its factorization.

68145377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 68145377 is about 8255.0213203843. The cubic root of 68145377 is about 408.4561751007.

The spelling of 68145377 in words is "sixty-eight million, one hundred forty-five thousand, three hundred seventy-seven".