67748121 has 24 divisors (see below), whose sum is σ = 112205184. Its totient is φ = 38586240.

The previous prime is 67748117. The next prime is 67748123. The reversal of 67748121 is 12184776.

It is not a de Polignac number, because 67748121 - 2² = 67748117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67748123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19636 + ... + 22826.

It is an arithmetic number, because the mean of its divisors is an integer number (4675216).

Almost surely, 2^67748121 is an apocalyptic number.

It is an amenable number.

67748121 is a deficient number, since it is larger than the sum of its proper divisors (44457063).

67748121 is a wasteful number, since it uses less digits than its factorization.

67748121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541 (or 3538 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 67748121 is about 8230.9246746644. The cubic root of 67748121 is about 407.6609243097.

The spelling of 67748121 in words is "sixty-seven million, seven hundred forty-eight thousand, one hundred twenty-one".