68006957 has 2 divisors, whose sum is σ = 68006958. Its totient is φ = 68006956.

The previous prime is 68006923. The next prime is 68006969. The reversal of 68006957 is 75960086.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66896041 + 1110916 = 8179^2 + 1054^2 .

It is a cyclic number.

It is not a de Polignac number, because 68006957 - 2⁶ = 68006893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68006557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34003478 + 34003479.

It is an arithmetic number, because the mean of its divisors is an integer number (34003479).

Almost surely, 2^68006957 is an apocalyptic number.

It is an amenable number.

68006957 is a deficient number, since it is larger than the sum of its proper divisors (1).

68006957 is an equidigital number, since it uses as much as digits as its factorization.

68006957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 68006957 is about 8246.6330705325. The cubic root of 68006957 is about 408.1794293614.

The spelling of 68006957 in words is "sixty-eight million, six thousand, nine hundred fifty-seven".