68650889 has 2 divisors, whose sum is σ = 68650890. Its totient is φ = 68650888.

The previous prime is 68650843. The next prime is 68650927. The reversal of 68650889 is 98805686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35010889 + 33640000 = 5917^2 + 5800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68650889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68650189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34325444 + 34325445.

It is an arithmetic number, because the mean of its divisors is an integer number (34325445).

Almost surely, 2^68650889 is an apocalyptic number.

It is an amenable number.

68650889 is a deficient number, since it is larger than the sum of its proper divisors (1).

68650889 is an equidigital number, since it uses as much as digits as its factorization.

68650889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 68650889 is about 8285.5832021651. The cubic root of 68650889 is about 409.4636830501.

The spelling of 68650889 in words is "sixty-eight million, six hundred fifty thousand, eight hundred eighty-nine".