67628741 has 2 divisors, whose sum is σ = 67628742. Its totient is φ = 67628740.

The previous prime is 67628731. The next prime is 67628747. The reversal of 67628741 is 14782676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37871716 + 29757025 = 6154^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 67628741 - 2⁶ = 67628677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67628747) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33814370 + 33814371.

It is an arithmetic number, because the mean of its divisors is an integer number (33814371).

Almost surely, 2^67628741 is an apocalyptic number.

It is an amenable number.

67628741 is a deficient number, since it is larger than the sum of its proper divisors (1).

67628741 is an equidigital number, since it uses as much as digits as its factorization.

67628741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 67628741 is about 8223.6695580501. The cubic root of 67628741 is about 407.4213350103.

The spelling of 67628741 in words is "sixty-seven million, six hundred twenty-eight thousand, seven hundred forty-one".