68517743 has 16 divisors (see below), whose sum is σ = 82775040. Its totient is φ = 55404000.

The previous prime is 68517737. The next prime is 68517809. The reversal of 68517743 is 34771586.

It is not a de Polignac number, because 68517743 - 2¹⁰ = 68516719 is a prime.

It is a super-2 number, since 2×68517743² = 9389362211628098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68517743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68519743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35093 + ... + 36993.

It is an arithmetic number, because the mean of its divisors is an integer number (5173440).

Almost surely, 2^68517743 is an apocalyptic number.

68517743 is a deficient number, since it is larger than the sum of its proper divisors (14257297).

68517743 is a wasteful number, since it uses less digits than its factorization.

68517743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198.

The product of its digits is 141120, while the sum is 41.

The square root of 68517743 is about 8277.5445030516. The cubic root of 68517743 is about 409.1987982301.

The spelling of 68517743 in words is "sixty-eight million, five hundred seventeen thousand, seven hundred forty-three".