80659040 has 96 divisors (see below), whose sum is σ = 237613824. Its totient is φ = 25136640.

The previous prime is 80659039. The next prime is 80659069. The reversal of 80659040 is 4095608.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 80658988 and 80659006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9047 + ... + 15593.

It is an arithmetic number, because the mean of its divisors is an integer number (2475144).

Almost surely, 2^80659040 is an apocalyptic number.

80659040 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 80659040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118806912).

80659040 is an abundant number, since it is smaller than the sum of its proper divisors (156954784).

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

80659040 is a wasteful number, since it uses less digits than its factorization.

80659040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580 (or 6572 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 80659040 is about 8981.0378019469. The cubic root of 80659040 is about 432.0669192172.

The spelling of 80659040 in words is "eighty million, six hundred fifty-nine thousand, forty".