71867648 has 36 divisors (see below), whose sum is σ = 144617088. Its totient is φ = 35642880.

The previous prime is 71867611. The next prime is 71867659. The reversal of 71867648 is 84676817.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32465 + ... + 34607.

Almost surely, 2^71867648 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 71867648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72308544).

71867648 is an abundant number, since it is smaller than the sum of its proper divisors (72749440).

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

71867648 is a wasteful number, since it uses less digits than its factorization.

71867648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2276 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 71867648 is about 8477.4788705133. The cubic root of 71867648 is about 415.7616978362.

The spelling of 71867648 in words is "seventy-one million, eight hundred sixty-seven thousand, six hundred forty-eight".