68278293 has 24 divisors (see below), whose sum is σ = 100776000. Its totient is φ = 44535744.

The previous prime is 68278291. The next prime is 68278321. The reversal of 68278293 is 39287286.

It is not a de Polignac number, because 68278293 - 2¹ = 68278291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68278291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119713 + ... + 120281.

It is an arithmetic number, because the mean of its divisors is an integer number (4199000).

Almost surely, 2^68278293 is an apocalyptic number.

It is an amenable number.

68278293 is a deficient number, since it is larger than the sum of its proper divisors (32497707).

68278293 is a wasteful number, since it uses less digits than its factorization.

68278293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 838 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 68278293 is about 8263.0680137586. The cubic root of 68278293 is about 408.7215641077.

The spelling of 68278293 in words is "sixty-eight million, two hundred seventy-eight thousand, two hundred ninety-three".