68308235 has 4 divisors (see below), whose sum is σ = 81969888. Its totient is φ = 54646584.

The previous prime is 68308213. The next prime is 68308243. The reversal of 68308235 is 53280386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53280386 = 2 ⋅26640193.

It is a cyclic number.

It is not a de Polignac number, because 68308235 - 2⁶ = 68308171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68308195 and 68308204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6830819 + ... + 6830828.

It is an arithmetic number, because the mean of its divisors is an integer number (20492472).

Almost surely, 2^68308235 is an apocalyptic number.

68308235 is a deficient number, since it is larger than the sum of its proper divisors (13661653).

68308235 is a wasteful number, since it uses less digits than its factorization.

68308235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13661652.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 68308235 is about 8264.8796119484. The cubic root of 68308235 is about 408.7813007730.

The spelling of 68308235 in words is "sixty-eight million, three hundred eight thousand, two hundred thirty-five".