67896661 has 16 divisors (see below), whose sum is σ = 79902720. Its totient is φ = 56493360.

The previous prime is 67896659. The next prime is 67896679. The reversal of 67896661 is 16669876.

It is not a de Polignac number, because 67896661 - 2¹ = 67896659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67896601) 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, 32280 + ... + 34318.

It is an arithmetic number, because the mean of its divisors is an integer number (4993920).

Almost surely, 2^67896661 is an apocalyptic number.

It is an amenable number.

67896661 is a deficient number, since it is larger than the sum of its proper divisors (12006059).

67896661 is a wasteful number, since it uses less digits than its factorization.

67896661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184.

The product of its digits is 653184, while the sum is 49.

The square root of 67896661 is about 8239.9430216477. The cubic root of 67896661 is about 407.9586435237.

The spelling of 67896661 in words is "sixty-seven million, eight hundred ninety-six thousand, six hundred sixty-one".