67485779 has 2 divisors, whose sum is σ = 67485780. Its totient is φ = 67485778.

The previous prime is 67485757. The next prime is 67485823. The reversal of 67485779 is 97758476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67485779 - 2²⁴ = 50708563 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67485779.

It is not a weakly prime, because it can be changed into another prime (67485709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33742889 + 33742890.

It is an arithmetic number, because the mean of its divisors is an integer number (33742890).

Almost surely, 2^67485779 is an apocalyptic number.

67485779 is a deficient number, since it is larger than the sum of its proper divisors (1).

67485779 is an equidigital number, since it uses as much as digits as its factorization.

67485779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The square root of 67485779 is about 8214.9728544895. The cubic root of 67485779 is about 407.1340466047.

The spelling of 67485779 in words is "sixty-seven million, four hundred eighty-five thousand, seven hundred seventy-nine".