68390423 has 4 divisors (see below), whose sum is σ = 69214488. Its totient is φ = 67566360.

The previous prime is 68390417. The next prime is 68390429. The reversal of 68390423 is 32409386.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32409386 = 2 ⋅16204693.

It is an interprime number because it is at equal distance from previous prime (68390417) and next prime (68390429).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68390423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68390429) 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, 411908 + ... + 412073.

It is an arithmetic number, because the mean of its divisors is an integer number (17303622).

Almost surely, 2^68390423 is an apocalyptic number.

68390423 is a deficient number, since it is larger than the sum of its proper divisors (824065).

68390423 is an equidigital number, since it uses as much as digits as its factorization.

68390423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824064.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 68390423 is about 8269.8502404820. The cubic root of 68390423 is about 408.9451826828.

The spelling of 68390423 in words is "sixty-eight million, three hundred ninety thousand, four hundred twenty-three".