68861899 has 2 divisors, whose sum is σ = 68861900. Its totient is φ = 68861898.

The previous prime is 68861887. The next prime is 68861911. The reversal of 68861899 is 99816886.

It is a balanced prime because it is at equal distance from previous prime (68861887) and next prime (68861911).

It is a cyclic number.

It is not a de Polignac number, because 68861899 - 2⁵ = 68861867 is a prime.

It is a super-2 number, since 2×68861899² = 9483922267772402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68861869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34430949 + 34430950.

It is an arithmetic number, because the mean of its divisors is an integer number (34430950).

Almost surely, 2^68861899 is an apocalyptic number.

68861899 is a deficient number, since it is larger than the sum of its proper divisors (1).

68861899 is an equidigital number, since it uses as much as digits as its factorization.

68861899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 55.

The square root of 68861899 is about 8298.3069960083. The cubic root of 68861899 is about 409.8827723549.

The spelling of 68861899 in words is "sixty-eight million, eight hundred sixty-one thousand, eight hundred ninety-nine".