67671864 has 96 divisors (see below), whose sum is σ = 198918720. Its totient is φ = 20659968.

The previous prime is 67671847. The next prime is 67671881. The reversal of 67671864 is 46817676.

It is an interprime number because it is at equal distance from previous prime (67671847) and next prime (67671881).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184209 + ... + 184575.

It is an arithmetic number, because the mean of its divisors is an integer number (2072070).

Almost surely, 2^67671864 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 67671864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99459360).

67671864 is an abundant number, since it is smaller than the sum of its proper divisors (131246856).

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

67671864 is a wasteful number, since it uses less digits than its factorization.

67671864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 582 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 67671864 is about 8226.2910232984. The cubic root of 67671864 is about 407.5079130786.

The spelling of 67671864 in words is "sixty-seven million, six hundred seventy-one thousand, eight hundred sixty-four".