67772669 has 2 divisors, whose sum is σ = 67772670. Its totient is φ = 67772668.

The previous prime is 67772633. The next prime is 67772701. The reversal of 67772669 is 96627776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42902500 + 24870169 = 6550^2 + 4987^2 .

It is a cyclic number.

It is not a de Polignac number, because 67772669 - 2⁸ = 67772413 is a prime.

It is a super-2 number, since 2×67772669² = 9186269326767122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67772569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33886334 + 33886335.

It is an arithmetic number, because the mean of its divisors is an integer number (33886335).

Almost surely, 2^67772669 is an apocalyptic number.

It is an amenable number.

67772669 is a deficient number, since it is larger than the sum of its proper divisors (1).

67772669 is an equidigital number, since it uses as much as digits as its factorization.

67772669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The square root of 67772669 is about 8232.4157450897. The cubic root of 67772669 is about 407.7101559429.

The spelling of 67772669 in words is "sixty-seven million, seven hundred seventy-two thousand, six hundred sixty-nine".