80646384 has 160 divisors (see below), whose sum is σ = 263872000. Its totient is φ = 20653056.

The previous prime is 80646373. The next prime is 80646403. The reversal of 80646384 is 48364608.

It is a super-3 number, since 3×80646384³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161367 + ... + 161865.

It is an arithmetic number, because the mean of its divisors is an integer number (1649200).

Almost surely, 2^80646384 is an apocalyptic number.

80646384 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 80646384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131936000).

80646384 is an abundant number, since it is smaller than the sum of its proper divisors (183225616).

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

80646384 is a wasteful number, since it uses less digits than its factorization.

80646384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 80646384 is about 8980.3331786744. Note that the first 3 decimals coincide. The cubic root of 80646384 is about 432.0443198700.

The spelling of 80646384 in words is "eighty million, six hundred forty-six thousand, three hundred eighty-four".