67744741 has 2 divisors, whose sum is σ = 67744742. Its totient is φ = 67744740.

The previous prime is 67744727. The next prime is 67744757. The reversal of 67744741 is 14744776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66080641 + 1664100 = 8129^2 + 1290^2 .

It is a cyclic number.

It is not a de Polignac number, because 67744741 - 2⁷ = 67744613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67744694 and 67744703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67744141) 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, 33872370 + 33872371.

It is an arithmetic number, because the mean of its divisors is an integer number (33872371).

Almost surely, 2^67744741 is an apocalyptic number.

It is an amenable number.

67744741 is a deficient number, since it is larger than the sum of its proper divisors (1).

67744741 is an equidigital number, since it uses as much as digits as its factorization.

67744741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 40.

The square root of 67744741 is about 8230.7193488783. The cubic root of 67744741 is about 407.6541447030.

The spelling of 67744741 in words is "sixty-seven million, seven hundred forty-four thousand, seven hundred forty-one".