68162657 has 2 divisors, whose sum is σ = 68162658. Its totient is φ = 68162656.

The previous prime is 68162629. The next prime is 68162659. The reversal of 68162657 is 75626186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52983841 + 15178816 = 7279^2 + 3896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68162657 is a prime.

It is a super-2 number, since 2×68162657² = 9292295618599298, which contains 22 as substring.

Together with 68162659, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 13.

It is not a weakly prime, because it can be changed into another prime (68162659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34081328 + 34081329.

It is an arithmetic number, because the mean of its divisors is an integer number (34081329).

Almost surely, 2^68162657 is an apocalyptic number.

It is an amenable number.

68162657 is a deficient number, since it is larger than the sum of its proper divisors (1).

68162657 is an equidigital number, since it uses as much as digits as its factorization.

68162657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 68162657 is about 8256.0678897402. The cubic root of 68162657 is about 408.4906970131.

The spelling of 68162657 in words is "sixty-eight million, one hundred sixty-two thousand, six hundred fifty-seven".