68505797 has 2 divisors, whose sum is σ = 68505798. Its totient is φ = 68505796.

The previous prime is 68505791. The next prime is 68505817. The reversal of 68505797 is 79750586.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61371556 + 7134241 = 7834^2 + 2671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68505797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68505791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34252898 + 34252899.

It is an arithmetic number, because the mean of its divisors is an integer number (34252899).

Almost surely, 2^68505797 is an apocalyptic number.

It is an amenable number.

68505797 is a deficient number, since it is larger than the sum of its proper divisors (1).

68505797 is an equidigital number, since it uses as much as digits as its factorization.

68505797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 68505797 is about 8276.8228807919. The cubic root of 68505797 is about 409.1750157141.

It can be divided in two parts, 6850579 and 7, that added together give a palindrome (6850586).

The spelling of 68505797 in words is "sixty-eight million, five hundred five thousand, seven hundred ninety-seven".