68669417 has 2 divisors, whose sum is σ = 68669418. Its totient is φ = 68669416.

The previous prime is 68669411. The next prime is 68669423. The reversal of 68669417 is 71496686.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (68669411) and next prime (68669423).

It can be written as a sum of positive squares in only one way, i.e., 68492176 + 177241 = 8276^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 68669417 - 2¹⁰ = 68668393 is a prime.

It is a super-2 number, since 2×68669417² = 9430977662239778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68669411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34334708 + 34334709.

It is an arithmetic number, because the mean of its divisors is an integer number (34334709).

Almost surely, 2^68669417 is an apocalyptic number.

It is an amenable number.

68669417 is a deficient number, since it is larger than the sum of its proper divisors (1).

68669417 is an equidigital number, since it uses as much as digits as its factorization.

68669417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 68669417 is about 8286.7012133900. The cubic root of 68669417 is about 409.5005160798.

The spelling of 68669417 in words is "sixty-eight million, six hundred sixty-nine thousand, four hundred seventeen".