68078951 has 2 divisors, whose sum is σ = 68078952. Its totient is φ = 68078950.

The previous prime is 68078947. The next prime is 68078953. The reversal of 68078951 is 15987086.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68078951 - 2² = 68078947 is a prime.

Together with 68078953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68078953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34039475 + 34039476.

It is an arithmetic number, because the mean of its divisors is an integer number (34039476).

Almost surely, 2^68078951 is an apocalyptic number.

68078951 is a deficient number, since it is larger than the sum of its proper divisors (1).

68078951 is an equidigital number, since it uses as much as digits as its factorization.

68078951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 68078951 is about 8250.9969700637. The cubic root of 68078951 is about 408.3234151508.

The spelling of 68078951 in words is "sixty-eight million, seventy-eight thousand, nine hundred fifty-one".