68416723 has 4 divisors (see below), whose sum is σ = 68439640. Its totient is φ = 68393808.

The previous prime is 68416717. The next prime is 68416753. The reversal of 68416723 is 32761486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32761486 = 2 ⋅16380743.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68416723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68416753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6165 + ... + 13222.

It is an arithmetic number, because the mean of its divisors is an integer number (17109910).

Almost surely, 2^68416723 is an apocalyptic number.

68416723 is a deficient number, since it is larger than the sum of its proper divisors (22917).

68416723 is a wasteful number, since it uses less digits than its factorization.

68416723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22916.

The product of its digits is 48384, while the sum is 37.

The square root of 68416723 is about 8271.4402010774. The cubic root of 68416723 is about 408.9975968439.

The spelling of 68416723 in words is "sixty-eight million, four hundred sixteen thousand, seven hundred twenty-three".