68356253 has 8 divisors (see below), whose sum is σ = 81518208. Its totient is φ = 56043504.

The previous prime is 68356241. The next prime is 68356261. The reversal of 68356253 is 35265386.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68356253 - 2⁴ = 68356237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68356213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212126 + ... + 212447.

It is an arithmetic number, because the mean of its divisors is an integer number (10189776).

Almost surely, 2^68356253 is an apocalyptic number.

It is an amenable number.

68356253 is a deficient number, since it is larger than the sum of its proper divisors (13161955).

68356253 is a wasteful number, since it uses less digits than its factorization.

68356253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424603.

The product of its digits is 129600, while the sum is 38.

The square root of 68356253 is about 8267.7840441076. The cubic root of 68356253 is about 408.8770640577.

The spelling of 68356253 in words is "sixty-eight million, three hundred fifty-six thousand, two hundred fifty-three".