68880893 has 2 divisors, whose sum is σ = 68880894. Its totient is φ = 68880892.

The previous prime is 68880881. The next prime is 68880899. The reversal of 68880893 is 39808886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43850884 + 25030009 = 6622^2 + 5003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68880893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68880899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34440446 + 34440447.

It is an arithmetic number, because the mean of its divisors is an integer number (34440447).

Almost surely, 2^68880893 is an apocalyptic number.

It is an amenable number.

68880893 is a deficient number, since it is larger than the sum of its proper divisors (1).

68880893 is an equidigital number, since it uses as much as digits as its factorization.

68880893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 68880893 is about 8299.4513674098. The cubic root of 68880893 is about 409.9204545265.

The spelling of 68880893 in words is "sixty-eight million, eight hundred eighty thousand, eight hundred ninety-three".