68615743 has 4 divisors (see below), whose sum is σ = 78418000. Its totient is φ = 58813488.

The previous prime is 68615737. The next prime is 68615753. The reversal of 68615743 is 34751686.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68615743 - 2¹⁷ = 68484671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68615696 and 68615705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68615753) 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 3 ways as a sum of consecutive naturals, for example, 4901118 + ... + 4901131.

It is an arithmetic number, because the mean of its divisors is an integer number (19604500).

Almost surely, 2^68615743 is an apocalyptic number.

68615743 is a deficient number, since it is larger than the sum of its proper divisors (9802257).

68615743 is an equidigital number, since it uses as much as digits as its factorization.

68615743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9802256.

The product of its digits is 120960, while the sum is 40.

The square root of 68615743 is about 8283.4620177798. The cubic root of 68615743 is about 409.3937957922.

The spelling of 68615743 in words is "sixty-eight million, six hundred fifteen thousand, seven hundred forty-three".