67870866 has 64 divisors (see below), whose sum is σ = 159805440. Its totient is φ = 18817920.

The previous prime is 67870853. The next prime is 67870871. The reversal of 67870866 is 66807876.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250311 + ... + 250581.

It is an arithmetic number, because the mean of its divisors is an integer number (2496960).

Almost surely, 2^67870866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67870866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79902720).

67870866 is an abundant number, since it is smaller than the sum of its proper divisors (91934574).

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

67870866 is a wasteful number, since it uses less digits than its factorization.

67870866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 67870866 is about 8238.3776315486. The cubic root of 67870866 is about 407.9069736969.

The spelling of 67870866 in words is "sixty-seven million, eight hundred seventy thousand, eight hundred sixty-six".