67681149 has 8 divisors (see below), whose sum is σ = 90740832. Its totient is φ = 44871120.

The previous prime is 67681139. The next prime is 67681171. The reversal of 67681149 is 94118676.

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

It is not a de Polignac number, because 67681149 - 2⁹ = 67680637 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67681149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67681109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61779 + ... + 62864.

It is an arithmetic number, because the mean of its divisors is an integer number (11342604).

Almost surely, 2^67681149 is an apocalyptic number.

It is an amenable number.

67681149 is a deficient number, since it is larger than the sum of its proper divisors (23059683).

67681149 is a wasteful number, since it uses less digits than its factorization.

67681149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124827.

The product of its digits is 72576, while the sum is 42.

The square root of 67681149 is about 8226.8553530495. The cubic root of 67681149 is about 407.5265497650.

The spelling of 67681149 in words is "sixty-seven million, six hundred eighty-one thousand, one hundred forty-nine".