67881241 has 4 divisors (see below), whose sum is σ = 68019984. Its totient is φ = 67742500.

The previous prime is 67881239. The next prime is 67881269. The reversal of 67881241 is 14218876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67881241 - 2¹ = 67881239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67881241.

It is not an unprimeable number, because it can be changed into a prime (67881641) 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 3 ways as a sum of consecutive naturals, for example, 68635 + ... + 69616.

It is an arithmetic number, because the mean of its divisors is an integer number (17004996).

Almost surely, 2^67881241 is an apocalyptic number.

It is an amenable number.

67881241 is a deficient number, since it is larger than the sum of its proper divisors (138743).

67881241 is a wasteful number, since it uses less digits than its factorization.

67881241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138742.

The product of its digits is 21504, while the sum is 37.

The square root of 67881241 is about 8239.0072824340. The cubic root of 67881241 is about 407.9277573776.

The spelling of 67881241 in words is "sixty-seven million, eight hundred eighty-one thousand, two hundred forty-one".