67992913 has 2 divisors, whose sum is σ = 67992914. Its totient is φ = 67992912.

The previous prime is 67992901. The next prime is 67992931. The reversal of 67992913 is 31929976.

Together with next prime (67992931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46676224 + 21316689 = 6832^2 + 4617^2 .

It is a cyclic number.

It is not a de Polignac number, because 67992913 - 2²¹ = 65895761 is a prime.

It is not a weakly prime, because it can be changed into another prime (67992943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33996456 + 33996457.

It is an arithmetic number, because the mean of its divisors is an integer number (33996457).

Almost surely, 2^67992913 is an apocalyptic number.

It is an amenable number.

67992913 is a deficient number, since it is larger than the sum of its proper divisors (1).

67992913 is an equidigital number, since it uses as much as digits as its factorization.

67992913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 46.

The square root of 67992913 is about 8245.7815275449. The cubic root of 67992913 is about 408.1513299492.

The spelling of 67992913 in words is "sixty-seven million, nine hundred ninety-two thousand, nine hundred thirteen".