80500644 has 288 divisors, whose sum is σ = 276756480. Its totient is φ = 19160064.

The previous prime is 80500639. The next prime is 80500649. The reversal of 80500644 is 44600508.

It is an interprime number because it is at equal distance from previous prime (80500639) and next prime (80500649).

It is not an unprimeable number, because it can be changed into a prime (80500649) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1872087 + ... + 1872129.

It is an arithmetic number, because the mean of its divisors is an integer number (960960).

Almost surely, 2^80500644 is an apocalyptic number.

80500644 is a gapful number since it is divisible by the number (84) 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 80500644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138378240).

80500644 is an abundant number, since it is smaller than the sum of its proper divisors (196255836).

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

80500644 is a wasteful number, since it uses less digits than its factorization.

80500644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 80500644 is about 8972.2151111083. The cubic root of 80500644 is about 431.7839068425.

The spelling of 80500644 in words is "eighty million, five hundred thousand, six hundred forty-four".