67978070 has 16 divisors (see below), whose sum is σ = 129558528. Its totient is φ = 25591680.

The previous prime is 67978061. The next prime is 67978091. The reversal of 67978070 is 7087976.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 199766 + ... + 200105.

It is an arithmetic number, because the mean of its divisors is an integer number (8097408).

Almost surely, 2^67978070 is an apocalyptic number.

67978070 is a deficient number, since it is larger than the sum of its proper divisors (61580458).

67978070 is a wasteful number, since it uses less digits than its factorization.

67978070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399895.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 67978070 is about 8244.8814424466. The cubic root of 67978070 is about 408.1216276817.

The spelling of 67978070 in words is "sixty-seven million, nine hundred seventy-eight thousand, seventy".