68770957 has 2 divisors, whose sum is σ = 68770958. Its totient is φ = 68770956.

The previous prime is 68770913. The next prime is 68770969. The reversal of 68770957 is 75907786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 30276 = 8291^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 68770957 - 2⁷ = 68770829 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68770957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68770907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34385478 + 34385479.

It is an arithmetic number, because the mean of its divisors is an integer number (34385479).

Almost surely, 2^68770957 is an apocalyptic number.

It is an amenable number.

68770957 is a deficient number, since it is larger than the sum of its proper divisors (1).

68770957 is an equidigital number, since it uses as much as digits as its factorization.

68770957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 68770957 is about 8292.8256342455. The cubic root of 68770957 is about 409.7022565645.

The spelling of 68770957 in words is "sixty-eight million, seven hundred seventy thousand, nine hundred fifty-seven".