8166709632 has 64 divisors (see below), whose sum is σ = 21725742960. Its totient is φ = 2718105600.

The previous prime is 8166709627. The next prime is 8166709643. The reversal of 8166709632 is 2369076618.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242632 + ... + 274232.

Almost surely, 2^8166709632 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 8166709632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10862871480).

8166709632 is an abundant number, since it is smaller than the sum of its proper divisors (13559033328).

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

8166709632 is a wasteful number, since it uses less digits than its factorization.

8166709632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32291 (or 32279 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 8166709632 is about 90369.8491312230. The cubic root of 8166709632 is about 2013.7970708843.

The spelling of 8166709632 in words is "eight billion, one hundred sixty-six million, seven hundred nine thousand, six hundred thirty-two".