80647632 has 120 divisors (see below), whose sum is σ = 247074464. Its totient is φ = 24406272.

The previous prime is 80647601. The next prime is 80647657. The reversal of 80647632 is 23674608.

80647632 is a `hidden beast` number, since 8 + 0 + 647 + 6 + 3 + 2 = 666.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125103 + ... + 125745.

Almost surely, 2^80647632 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 80647632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123537232).

80647632 is an abundant number, since it is smaller than the sum of its proper divisors (166426832).

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

80647632 is a wasteful number, since it uses less digits than its factorization.

80647632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 80647632 is about 8980.4026635781. The cubic root of 80647632 is about 432.0465484821.

The spelling of 80647632 in words is "eighty million, six hundred forty-seven thousand, six hundred thirty-two".