68423723 has 4 divisors (see below), whose sum is σ = 68916120. Its totient is φ = 67931328.

The previous prime is 68423701. The next prime is 68423753. The reversal of 68423723 is 32732486.

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 68423723 - 2⁶ = 68423659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68423753) 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, 245990 + ... + 246267.

It is an arithmetic number, because the mean of its divisors is an integer number (17229030).

Almost surely, 2^68423723 is an apocalyptic number.

68423723 is a deficient number, since it is larger than the sum of its proper divisors (492397).

68423723 is a wasteful number, since it uses less digits than its factorization.

68423723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492396.

The product of its digits is 48384, while the sum is 35.

The square root of 68423723 is about 8271.8633330103. The cubic root of 68423723 is about 409.0115451176.

The spelling of 68423723 in words is "sixty-eight million, four hundred twenty-three thousand, seven hundred twenty-three".