67771121 has 8 divisors (see below), whose sum is σ = 73992288. Its totient is φ = 61560000.

The previous prime is 67771111. The next prime is 67771127. The reversal of 67771121 is 12117776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67771121 - 2¹⁴ = 67754737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67771127) 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 in 7 ways as a sum of consecutive naturals, for example, 22346 + ... + 25196.

It is an arithmetic number, because the mean of its divisors is an integer number (9249036).

Almost surely, 2^67771121 is an apocalyptic number.

It is an amenable number.

67771121 is a deficient number, since it is larger than the sum of its proper divisors (6221167).

67771121 is a wasteful number, since it uses less digits than its factorization.

67771121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5023.

The product of its digits is 4116, while the sum is 32.

The square root of 67771121 is about 8232.3217259774. The cubic root of 67771121 is about 407.7070517411.

Adding to 67771121 its reverse (12117776), we get a palindrome (79888897).

The spelling of 67771121 in words is "sixty-seven million, seven hundred seventy-one thousand, one hundred twenty-one".