67776668 has 12 divisors (see below), whose sum is σ = 119212632. Its totient is φ = 33715920.

The previous prime is 67776641. The next prime is 67776677. The reversal of 67776668 is 86667776.

67776668 = T₁₅₂ + T₁₅₃ + ... + T₇₄₂.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42218 + ... + 43793.

It is an arithmetic number, because the mean of its divisors is an integer number (9934386).

Almost surely, 2^67776668 is an apocalyptic number.

It is an amenable number.

67776668 is a deficient number, since it is larger than the sum of its proper divisors (51435964).

67776668 is a wasteful number, since it uses less digits than its factorization.

67776668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86212 (or 86210 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 53.

The square root of 67776668 is about 8232.6586228265. The cubic root of 67776668 is about 407.7181749121.

The spelling of 67776668 in words is "sixty-seven million, seven hundred seventy-six thousand, six hundred sixty-eight".