67668036 has 12 divisors (see below), whose sum is σ = 157892112. Its totient is φ = 22556008.

The previous prime is 67668031. The next prime is 67668037. The reversal of 67668036 is 63086676.

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

It is not an unprimeable number, because it can be changed into a prime (67668031) 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, 2819490 + ... + 2819513.

It is an arithmetic number, because the mean of its divisors is an integer number (13157676).

Almost surely, 2^67668036 is an apocalyptic number.

It is an amenable number.

67668036 is an abundant number, since it is smaller than the sum of its proper divisors (90224076).

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

67668036 is a wasteful number, since it uses less digits than its factorization.

67668036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639010 (or 5639008 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 67668036 is about 8226.0583513612. The cubic root of 67668036 is about 407.5002290889.

The spelling of 67668036 in words is "sixty-seven million, six hundred sixty-eight thousand, thirty-six".