68276289 has 8 divisors (see below), whose sum is σ = 92972160. Its totient is φ = 44548976.

The previous prime is 68276281. The next prime is 68276309. The reversal of 68276289 is 98267286.

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 68276289 - 2³ = 68276281 is a prime.

It is a super-2 number, since 2×68276289² = 9323303279223042, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68276281) 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, 241974 + ... + 242255.

It is an arithmetic number, because the mean of its divisors is an integer number (11621520).

Almost surely, 2^68276289 is an apocalyptic number.

It is an amenable number.

68276289 is a deficient number, since it is larger than the sum of its proper divisors (24695871).

68276289 is a wasteful number, since it uses less digits than its factorization.

68276289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484279.

The product of its digits is 580608, while the sum is 48.

The square root of 68276289 is about 8262.9467504033. The cubic root of 68276289 is about 408.7175653453.

The spelling of 68276289 in words is "sixty-eight million, two hundred seventy-six thousand, two hundred eighty-nine".