68068668 has 12 divisors (see below), whose sum is σ = 158826920. Its totient is φ = 22689552.

The previous prime is 68068667. The next prime is 68068669. The reversal of 68068668 is 86686086.

It is an interprime number because it is at equal distance from previous prime (68068667) and next prime (68068669).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68068667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2836183 + ... + 2836206.

Almost surely, 2^68068668 is an apocalyptic number.

It is an amenable number.

68068668 is an abundant number, since it is smaller than the sum of its proper divisors (90758252).

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

68068668 is a wasteful number, since it uses less digits than its factorization.

68068668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672396 (or 5672394 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 68068668 is about 8250.3738097131. The cubic root of 68068668 is about 408.3028556826.

The spelling of 68068668 in words is "sixty-eight million, sixty-eight thousand, six hundred sixty-eight".