8091648 has 72 divisors (see below), whose sum is σ = 23423400. Its totient is φ = 2691072.

The previous prime is 8091617. The next prime is 8091679. The reversal of 8091648 is 8461908.

It is a happy number.

8091648 is a `hidden beast` number, since 8 + 0 + 9 + 1 + 648 = 666.

It is an interprime number because it is at equal distance from previous prime (8091617) and next prime (8091679).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18213 + ... + 18651.

It is an arithmetic number, because the mean of its divisors is an integer number (325325).

Almost surely, 2^8091648 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 8091648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11711700).

8091648 is an abundant number, since it is smaller than the sum of its proper divisors (15331752).

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

8091648 is a wasteful number, since it uses less digits than its factorization.

8091648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 8091648 is about 2844.5822188856. The cubic root of 8091648 is about 200.7608353113.

The spelling of 8091648 in words is "eight million, ninety-one thousand, six hundred forty-eight".