67806312 has 64 divisors (see below), whose sum is σ = 194935680. Its totient is φ = 19252992.

The previous prime is 67806287. The next prime is 67806317. The reversal of 67806312 is 21360876.

It is not an unprimeable number, because it can be changed into a prime (67806317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27898 + ... + 30230.

It is an arithmetic number, because the mean of its divisors is an integer number (3045870).

Almost surely, 2^67806312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67806312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97467840).

67806312 is an abundant number, since it is smaller than the sum of its proper divisors (127129368).

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

67806312 is a wasteful number, since it uses less digits than its factorization.

67806312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522 (or 2518 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 67806312 is about 8234.4588164615. The cubic root of 67806312 is about 407.7776085208. Note that the first 3 decimals are identical.

The spelling of 67806312 in words is "sixty-seven million, eight hundred six thousand, three hundred twelve".