68634469 has 2 divisors, whose sum is σ = 68634470. Its totient is φ = 68634468.

The previous prime is 68634439. The next prime is 68634481. The reversal of 68634469 is 96443686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62568100 + 6066369 = 7910^2 + 2463^2 .

It is a cyclic number.

It is not a de Polignac number, because 68634469 - 2¹³ = 68626277 is a prime.

It is a super-2 number, since 2×68634469² = 9421380669823922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68634409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34317234 + 34317235.

It is an arithmetic number, because the mean of its divisors is an integer number (34317235).

Almost surely, 2^68634469 is an apocalyptic number.

It is an amenable number.

68634469 is a deficient number, since it is larger than the sum of its proper divisors (1).

68634469 is an equidigital number, since it uses as much as digits as its factorization.

68634469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 46.

The square root of 68634469 is about 8284.5922651631. The cubic root of 68634469 is about 409.4310351126.

The spelling of 68634469 in words is "sixty-eight million, six hundred thirty-four thousand, four hundred sixty-nine".