67220773 has 2 divisors, whose sum is σ = 67220774. Its totient is φ = 67220772.

The previous prime is 67220767. The next prime is 67220827. The reversal of 67220773 is 37702276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39162564 + 28058209 = 6258^2 + 5297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67220773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67220723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33610386 + 33610387.

It is an arithmetic number, because the mean of its divisors is an integer number (33610387).

Almost surely, 2^67220773 is an apocalyptic number.

It is an amenable number.

67220773 is a deficient number, since it is larger than the sum of its proper divisors (1).

67220773 is an equidigital number, since it uses as much as digits as its factorization.

67220773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 67220773 is about 8198.8275381301. The cubic root of 67220773 is about 406.6004304766.

The spelling of 67220773 in words is "sixty-seven million, two hundred twenty thousand, seven hundred seventy-three".