67981674 has 32 divisors (see below), whose sum is σ = 145466496. Its totient is φ = 21104640.

The previous prime is 67981637. The next prime is 67981679. The reversal of 67981674 is 47618976.

It is not an unprimeable number, because it can be changed into a prime (67981679) 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 15 ways as a sum of consecutive naturals, for example, 6459 + ... + 13329.

It is an arithmetic number, because the mean of its divisors is an integer number (4545828).

Almost surely, 2^67981674 is an apocalyptic number.

67981674 is an abundant number, since it is smaller than the sum of its proper divisors (77484822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67981674 is a wasteful number, since it uses less digits than its factorization.

67981674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990.

The product of its digits is 508032, while the sum is 48.

The square root of 67981674 is about 8245.0999993936. The cubic root of 67981674 is about 408.1288400290.

The spelling of 67981674 in words is "sixty-seven million, nine hundred eighty-one thousand, six hundred seventy-four".