67442668 has 12 divisors (see below), whose sum is σ = 118475280. Its totient is φ = 33592592.

The previous prime is 67442651. The next prime is 67442737. The reversal of 67442668 is 86624476.

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, 31003 + ... + 33106.

It is an arithmetic number, because the mean of its divisors is an integer number (9872940).

Almost surely, 2^67442668 is an apocalyptic number.

It is an amenable number.

67442668 is a deficient number, since it is larger than the sum of its proper divisors (51032612).

67442668 is a wasteful number, since it uses less digits than its factorization.

67442668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64376 (or 64374 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 67442668 is about 8212.3485069741. The cubic root of 67442668 is about 407.0473335472.

The spelling of 67442668 in words is "sixty-seven million, four hundred forty-two thousand, six hundred sixty-eight".