76868579 has 2 divisors, whose sum is σ = 76868580. Its totient is φ = 76868578.

The previous prime is 76868557. The next prime is 76868581. The reversal of 76868579 is 97586867.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76868579 is a prime.

Together with 76868581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76868549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38434289 + 38434290.

It is an arithmetic number, because the mean of its divisors is an integer number (38434290).

Almost surely, 2^76868579 is an apocalyptic number.

76868579 is a deficient number, since it is larger than the sum of its proper divisors (1).

76868579 is an equidigital number, since it uses as much as digits as its factorization.

76868579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 56.

The square root of 76868579 is about 8767.4727829632. The cubic root of 76868579 is about 425.1899109735.

The spelling of 76868579 in words is "seventy-six million, eight hundred sixty-eight thousand, five hundred seventy-nine".