80532639 has 18 divisors (see below), whose sum is σ = 127863008. Its totient is φ = 48807000.

The previous prime is 80532607. The next prime is 80532649. The reversal of 80532639 is 93623508.

It is not a de Polignac number, because 80532639 - 2⁵ = 80532607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80532649) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35887 + ... + 38064.

Almost surely, 2^80532639 is an apocalyptic number.

80532639 is a deficient number, since it is larger than the sum of its proper divisors (47330369).

80532639 is a wasteful number, since it uses less digits than its factorization.

80532639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73979 (or 73965 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 80532639 is about 8973.9979384887. The cubic root of 80532639 is about 431.8411034709.

The spelling of 80532639 in words is "eighty million, five hundred thirty-two thousand, six hundred thirty-nine".