68704577 has 2 divisors, whose sum is σ = 68704578. Its totient is φ = 68704576.

The previous prime is 68704511. The next prime is 68704609. The reversal of 68704577 is 77540786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68293696 + 410881 = 8264^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 68704577 - 2¹² = 68700481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68704507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34352288 + 34352289.

It is an arithmetic number, because the mean of its divisors is an integer number (34352289).

Almost surely, 2^68704577 is an apocalyptic number.

It is an amenable number.

68704577 is a deficient number, since it is larger than the sum of its proper divisors (1).

68704577 is an equidigital number, since it uses as much as digits as its factorization.

68704577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 68704577 is about 8288.8224133468. The cubic root of 68704577 is about 409.5703947445.

The spelling of 68704577 in words is "sixty-eight million, seven hundred four thousand, five hundred seventy-seven".