68278793 has 4 divisors (see below), whose sum is σ = 74485968. Its totient is φ = 62071620.

The previous prime is 68278757. The next prime is 68278807. The reversal of 68278793 is 39787286.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68278793 - 2⁸ = 68278537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68278493) 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, 3103571 + ... + 3103592.

It is an arithmetic number, because the mean of its divisors is an integer number (18621492).

Almost surely, 2^68278793 is an apocalyptic number.

It is an amenable number.

68278793 is a deficient number, since it is larger than the sum of its proper divisors (6207175).

68278793 is a wasteful number, since it uses less digits than its factorization.

68278793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207174.

The product of its digits is 1016064, while the sum is 50.

The square root of 68278793 is about 8263.0982688093. The cubic root of 68278793 is about 408.7225617908.

The spelling of 68278793 in words is "sixty-eight million, two hundred seventy-eight thousand, seven hundred ninety-three".