8671403520 has 720 divisors, whose sum is σ = 34695069552. Its totient is φ = 1993605120.

The previous prime is 8671403491. The next prime is 8671403563. The reversal of 8671403520 is 253041768.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 66193855 + ... + 66193985.

Almost surely, 2^8671403520 is an apocalyptic number.

8671403520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8671403520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17347534776).

8671403520 is an abundant number, since it is smaller than the sum of its proper divisors (26023666032).

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

8671403520 is a wasteful number, since it uses less digits than its factorization.

8671403520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 8671403520 is about 93120.3711332810. The cubic root of 8671403520 is about 2054.4542070886.

The spelling of 8671403520 in words is "eight billion, six hundred seventy-one million, four hundred three thousand, five hundred twenty".