68359957 has 2 divisors, whose sum is σ = 68359958. Its totient is φ = 68359956.

The previous prime is 68359943. The next prime is 68359969. The reversal of 68359957 is 75995386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 1136356 = 8199^2 + 1066^2 .

It is a cyclic number.

It is not a de Polignac number, because 68359957 - 2⁷ = 68359829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68359987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34179978 + 34179979.

It is an arithmetic number, because the mean of its divisors is an integer number (34179979).

Almost surely, 2^68359957 is an apocalyptic number.

It is an amenable number.

68359957 is a deficient number, since it is larger than the sum of its proper divisors (1).

68359957 is an equidigital number, since it uses as much as digits as its factorization.

68359957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 68359957 is about 8268.0080430537. The cubic root of 68359957 is about 408.8844491577.

The spelling of 68359957 in words is "sixty-eight million, three hundred fifty-nine thousand, nine hundred fifty-seven".