68880881 has 2 divisors, whose sum is σ = 68880882. Its totient is φ = 68880880.

The previous prime is 68880869. The next prime is 68880893. The reversal of 68880881 is 18808886.

It is a balanced prime because it is at equal distance from previous prime (68880869) and next prime (68880893).

It can be written as a sum of positive squares in only one way, i.e., 54893281 + 13987600 = 7409^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 68880881 - 2¹⁰ = 68879857 is a prime.

It is a super-2 number, since 2×68880881² = 9489151534672322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68885881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34440440 + 34440441.

It is an arithmetic number, because the mean of its divisors is an integer number (34440441).

Almost surely, 2^68880881 is an apocalyptic number.

It is an amenable number.

68880881 is a deficient number, since it is larger than the sum of its proper divisors (1).

68880881 is an equidigital number, since it uses as much as digits as its factorization.

68880881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196608, while the sum is 47.

The square root of 68880881 is about 8299.4506444704. The cubic root of 68880881 is about 409.9204307219.

The spelling of 68880881 in words is "sixty-eight million, eight hundred eighty thousand, eight hundred eighty-one".