67676768 has 24 divisors (see below), whose sum is σ = 134538768. Its totient is φ = 33508224.

The previous prime is 67676761. The next prime is 67676783. The reversal of 67676768 is 86767676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67676761) 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, 6971 + ... + 13562.

It is an arithmetic number, because the mean of its divisors is an integer number (5605782).

Almost surely, 2^67676768 is an apocalyptic number.

It is an amenable number.

67676768 is a deficient number, since it is larger than the sum of its proper divisors (66862000).

67676768 is a wasteful number, since it uses less digits than its factorization.

67676768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20646 (or 20638 counting only the distinct ones).

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

The square root of 67676768 is about 8226.5890866142. The cubic root of 67676768 is about 407.5177565123.

The spelling of 67676768 in words is "sixty-seven million, six hundred seventy-six thousand, seven hundred sixty-eight".