67923979 has 2 divisors, whose sum is σ = 67923980. Its totient is φ = 67923978.

The previous prime is 67923967. The next prime is 67924013. The reversal of 67923979 is 97932976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67923979 - 2⁷ = 67923851 is a prime.

It is a super-2 number, since 2×67923979² = 9227333846384882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67923929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33961989 + 33961990.

It is an arithmetic number, because the mean of its divisors is an integer number (33961990).

Almost surely, 2^67923979 is an apocalyptic number.

67923979 is a deficient number, since it is larger than the sum of its proper divisors (1).

67923979 is an equidigital number, since it uses as much as digits as its factorization.

67923979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1285956, while the sum is 52.

The square root of 67923979 is about 8241.6005120365. The cubic root of 67923979 is about 408.0133497971.

The spelling of 67923979 in words is "sixty-seven million, nine hundred twenty-three thousand, nine hundred seventy-nine".