67420849 has 2 divisors, whose sum is σ = 67420850. Its totient is φ = 67420848.

The previous prime is 67420831. The next prime is 67420879. The reversal of 67420849 is 94802476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51739249 + 15681600 = 7193^2 + 3960^2 .

It is a cyclic number.

It is not a de Polignac number, because 67420849 - 2¹⁷ = 67289777 is a prime.

It is not a weakly prime, because it can be changed into another prime (67420879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33710424 + 33710425.

It is an arithmetic number, because the mean of its divisors is an integer number (33710425).

Almost surely, 2^67420849 is an apocalyptic number.

It is an amenable number.

67420849 is a deficient number, since it is larger than the sum of its proper divisors (1).

67420849 is an equidigital number, since it uses as much as digits as its factorization.

67420849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 67420849 is about 8211.0199731824. The cubic root of 67420849 is about 407.0034329327.

The spelling of 67420849 in words is "sixty-seven million, four hundred twenty thousand, eight hundred forty-nine".