68772841 has 2 divisors, whose sum is σ = 68772842. Its totient is φ = 68772840.

The previous prime is 68772839. The next prime is 68772857. The reversal of 68772841 is 14827786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38081241 + 30691600 = 6171^2 + 5540^2 .

It is a cyclic number.

It is not a de Polignac number, because 68772841 - 2¹ = 68772839 is a prime.

It is a super-2 number, since 2×68772841² = 9459407318422562, which contains 22 as substring.

Together with 68772839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68772811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34386420 + 34386421.

It is an arithmetic number, because the mean of its divisors is an integer number (34386421).

Almost surely, 2^68772841 is an apocalyptic number.

It is an amenable number.

68772841 is a deficient number, since it is larger than the sum of its proper divisors (1).

68772841 is an equidigital number, since it uses as much as digits as its factorization.

68772841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 43.

The square root of 68772841 is about 8292.9392256304. The cubic root of 68772841 is about 409.7059978338.

The spelling of 68772841 in words is "sixty-eight million, seven hundred seventy-two thousand, eight hundred forty-one".