67678146 has 32 divisors (see below), whose sum is σ = 155251200. Its totient is φ = 21831120.

The previous prime is 67678067. The next prime is 67678151. The reversal of 67678146 is 64187676.

It is an unprimeable number.

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, 18541 + ... + 21888.

It is an arithmetic number, because the mean of its divisors is an integer number (4851600).

Almost surely, 2^67678146 is an apocalyptic number.

67678146 is an abundant number, since it is smaller than the sum of its proper divisors (87573054).

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

67678146 is a wasteful number, since it uses less digits than its factorization.

67678146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40471 (or 40465 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 67678146 is about 8226.6728390036. The cubic root of 67678146 is about 407.5205223835.

The spelling of 67678146 in words is "sixty-seven million, six hundred seventy-eight thousand, one hundred forty-six".